Diabetes is a chronic health condition that is caused by inadequate production of insulin or inability of the body to utilize the insulin effectively which primarily turns food into energy. Across the Globe this is one of the most prevalent diseases among all age groups. Early diagnosis benefits and Importance of early medical treatment are the areas where most of the research is done. Benefits for early diagnosis are it allows timely intervention, reducing the risk of severe health issues such as heart disease, kidney failure, and vision loss. Regular checkups should be done for timely diagnosis as symptoms of type 2 diabetes may go unnoticed for years. Effective management through lifestyle changes and medication can significantly reduce the risk of complications. Moreover, early intervention has economic benefits as it reduces the costs treatment of complication of untreated diabetes. In summary early disease detection and timely medical intervention are vital for preventing complications, enhancing quality of life, and reducing healthcare costs.
Early Warning Signs of Diabetes:
Identifying the early warning signs of the diabetes help in early diagnosis and effective management of the diseases. Following are the signs you should look forward
Increased thirst and dry mouth which is also known as polydipsia is due to high blood sugar levels pulling water from the cells
Frequent Urination (Polyuria) especially during the nighttime is because the kidneys have work to expel excess levels of glucose out of the blood.
Unexplained Weight Loss occurs even after eating normal or more because cells are not getting energy, so they burn fat and muscles for energy.
Extreme Hunger (Polyphagia) happens because of body’s inability to utilize the glucose for energy or store glucose as glycogen.
Fatigue and Weakness persistent tiredness due to low energy levels.
Slow-Healing of Wounds due to impaired blood circulation and high glucose levels.
Frequent Infections happens such as UTIs due to high glucose levels that support bacterial and fungal growth.
Who Should Undergo Testing for Diabetes?
All individuals with specific risk factors, symptoms, or conditions are recommended to undergo testing for the diabetes. According to World Health Organization (WHO) and the American Diabetes Association (ADA), the following group of people should undergo testing
People with Symptoms of Diabetes
Adults Aged 45 and Older
Individuals with Overweight or Obesity
People with a Family History of Diabetes
Individuals with a Sedentary Lifestyle
Women with a History of Gestational Diabetes or Polycystic Ovary Syndrome (PCOS)
Individuals with Cardiovascular Risk Factors
Individuals with Pre-diabetes
Children and Adolescents
Individuals with Certain Ethnic Backgrounds
People with Other Medical Conditions
How to diagnose diabetes:
WHO diabetes diagnostic criteria
World health organization has set a specific criterion for accurate diagnosis management of the diabetes which includes diagnostic tests for diabetes:
Common Diagnostic Tests:
A. Fasting Plasma Glucose (FPG) Test: Fasting is defined as no caloric intake for at least 08 hours prior to the test. And this test measures the blood glucose level after a fast. The diagnostic criteria include
Normal: <100 mg/dL (5.6 mmol/L)
Prediabetes: 100–125 mg/dL (5.6–6.9 mmol/L)
Diabetes: ≥126 mg/dL (7.0 mmol/L)
B. Oral Glucose Tolerance Test (OGTT): This test measures the glucose level in the blood before and 2 hours after consuming a glucose rich drink. The diagnostic criterion for this test includes following after 02 hours of consuming glucose rich drink
Normal: <140 mg/dL (7.8 mmol/L)
Prediabetes: 140–199 mg/dL (7.8–11.0 mmol/L)
Diabetes: ≥200 mg/dL (11.1 mmol/L)
C. Hemoglobin A1c (HbA1c) Test: This test measures the average blood glucose level of previous 2-3 months. The diagnostic criterion for this test is following:
Normal: <5.7%
Prediabetes: 5.7%–6.4%
Diabetes: ≥6.5%
D. Random Plasma Glucose Test: This test measures the blood glucose levels at any time of the day without fasting and the individuals which have symptoms of diabetes along with random plasma glucose of ≥11.1 mmol/L (200 mg/dL) is suggestive of diabetes.
Diagnostic Criteria for Gestational Diabetes Mellitus (GDM):
Gestational diabetes is a type of diabetes that occurs during pregnancy when the body cannot effectively use insulin, leading to high blood sugar levels. The following plasma glucose values are used to diagnose GDM:
These values are given it the latest WHO’s guidelines on classification of diabetes mellitus. It is important to remember that these values are measured from the venous plasma glucose measurements. Repeated testing on multiple days should be done to diagnose diabetes mellitus as sometimes there is unequivocal hyperglycemia with acute metabolic decompensation.
When to Test for diabetes?
According to World Health Organization (WHO) and the American Diabetes Association (ADA) All these people with risk factors that are mentioned above should be tested every 03 years. And the people who had blood sugar levels in pre-diabetes range may require annual testing.
Diabetes is a chronic health condition that is caused by inadequate production of insulin or inability of the body to utilize the insulin effectively which primarily turns food into energy. Across the Globe this is one of the most prevalent diseases among all age groups. According to WHO the number of people living with diabetes rose from 200 million in 1990 to 830 million in 2022. Prevalence has been rising more rapidly in low- and middle-income countries than in high-income countries and more than half of people are not taking medication for their diabetes. In 2021, diabetes and kidney disease due to diabetes caused over 2 million deaths. In addition, around 11% of cardiovascular deaths were caused by high blood glucose.
Insulin, a hormone that is produced by the pancreas in response to the body signals of the high blood sugar levels, signals cells in the body (especially in muscles, fat, and the liver) to absorb glucose for energy or storage. It helps conversion of glucose in glycogen a storage form of energy for later use and glucose as fat for long-term energy reserves. By ensuring the effective uptake of glucose it prevents body from hyperglycemia keeps sugar in normal levels.
Hyperglycemia, raised blood sugar levels or raised blood sugar, is the common effect of the diabetes which if left untreated can cause serious damage to the body especially the nerves and blood vessels which in turn leads to damage to the different systems of the body.
what is diabetes?
Types of Diabetes:
1. Type 1 Diabetes:
Type 1 diabetes is an autoimmune condition where body’s immune system produce antibodies against Beta cells of pancrease which produce insulin, leading to little or no insulin production. The exact cause of type 1 diabetes is unknown, but it is beleived to be combination of genetic and enviornmental factors. This type of diabetes is often diagnosed in young adults and children.
2. Type 2 Diabetes:
Type 2 diabetes is caused by resistance of the body to insulin or when pancreas fails to produce enough insulin that is required for the body to function properly. When body isn’t responding to insulin effectively it leads to increased sugar levels in the body which signals the pancreas to produce more insulin. Overtime pancreas starts producing less insulin which further worsens the balance. Type 2 diabetes accounts for 90-95% of all diabetes globally. It mostly diagnosed in later years of life.
3. Gestational diabetes:
Gestational diabetes is a type of diabetes that occurs during pregnancy when the body cannot effectively use insulin, leading to high blood sugar levels. This condition typically develops in the second or third trimester and often resolves after delivery. However, it can pose health risks for both the mother and baby if not managed properly.
4. Secondary diabetes:
This is the type of diabetes that is caused by some other medical condition or some medications that disrupts body’s ability to regulate blood sugar level. This may include pancreatic diseases, hormonal disorders or certain medications.
What Causes Diabetes?
Causes of Type 1 Diabetes:
The exact cause is not known while several factors contribute to the development of Type 1 diabetes:
1. Autoimmune Response:
The immune system of the body attacks its own Beta cells in the pancreas that produces the insulin the exact cause to this is not fully understood but involves combination of genetic and environmental factors.
2. Genetic Factors:
Positive family history of type 1 diabetes increases the risk. Variations in the HLA (human leukocyte antigen) gene complex which have a role in immune system is associated with higher likelihood of prevalence of type 1 diabetes
3. Environmental Triggers:
There are certain viruses, such as the coxsackievirus, rubella, or enteroviruses, may trigger the autoimmune response in genetically predisposed individuals. A correlation has been found between the cow’s milk or lack of breastfeeding in infancy and type 1 diabetes, yet it is bit controversial. Prevalence is high in colder climates and during winter months for example Northern European countries have a higher incidence of Type 1 diabetes compared to equatorial regions.
4. Toxins:
Certain environmental toxins (e.g., nitrosamines) are found in association with damaging pancreatic Beta cells and triggering autoimmune reactions.
Causes of Type 2 Diabetes:
Unlike Type 1 diabetes, Type 2 diabetes is associated with modifiable lifestyle choices and predisposition. And the factors that contribute to it are
1. Insulin Resistance:
The receptors on the cells in muscles, fat, and the liver fail to respond effectively to insulin, which prevents glucose from entering into the cells which leads to hyperglycemia the pancreas produces more insulin to compensate, but with the time, this leads to beta-cell dysfunction and reduced insulin secretion.
2. Genetic Factors:
There are certain genetic mutations that affects the insulin sensitivity, glucose metabolism, or beta-cell function, which predisposes an individual to diabetes. So, if your parents have type 2 diabetes the risk increases significantly.
3. Lifestyle and Behavioral Factors:
Unhealthy Diet, lack of physical activity and obesity are the leading contributors to type 2 diabetes. A sedentary lifestyle reduces insulin sensitivity and contributes to excess body fat, especially around the abdomen which leads to hormonal imbalance that promote insulin resistance.
4. Age and Demographics:
the risk of type 2 diabetes increases after age 45 due to natural declines in insulin sensitivity and physical activity. Certain groups of people are at higher risk of diseases then others such as African Americans, Hispanics, Native Americans, and South Asians, are at higher risk.
5. Medical and Environmental Factors:
Metabolic syndromes such as high blood pressure, high cholesterol, and excess abdominal fat, increases the risk. Hormonal disorders can contribute to the insulin resistance such as polycystic ovary syndrome (PCOS). Stress, poor sleep, or exposure to toxins may contribute to Type 2 diabetes development.
6. Certain Medications:
Type 2 diabetes can result from long-term use of drugs such as beta-blockers, corticosteroids, or antipsychotics that affect glucose metabolism.
Persons with lactose intolerance have genetic deficiency of the enzyme Lactase that breaks down the lactose in the food into smaller particles that are absorbable in small intestine. Lactose is natural sugar present in the milk and other dairy products. sizable number of adults believe they are lactose intolerant but do not actually have impaired lactose digestion, and some persons with lactase deficiency can tolerate moderate amounts of ingested lactose.
Pathophysiology
The lactase enzyme is present in the brush border villi of small intestine. This enzyme breakdown the lactose in glucose and galactose, only these small breakdown products are able to cross the cell membrane in the jejunum and get absorbed in jejunum. These unabsorbed sugars osmotically attract fluid into the bowel lumen. The lactose alone increases the water content three times.
Further, these unabsorbed lactose molecules are acted upon by the colon bacteria that cause fermentation. Fermentation produces gas and results in the cleavage of lactose into monosaccharides. These monosaccharides are also not absorbed in the gut thus further increasing the osmotic pressure and drawing more fluid into the bowel. And these answers can it causes diarrhea?
Prevalence
According to the data from World Population Review 65% of the people have some degree of lactose tolerance. The prevalence vary from region to region` and ethnic groups. Lactose intolerance is generally most common in Asian countries, especially in East Asian, where about 70-100% of people show lactose intolerance; it is least prevented in Northern and Central Europe, where only about 5% of the population has lactose intolerance.
Some people often ask Which are the countries that are 100% lactose intolerant or where is lactose intolerance prevalent? Ghana, Malawi, South Korea, and Yemen are the countries that are considered 100% lactose intolerant.
Causes
There are different causes of the lactose intolerance. And they are classified into different types depending on the cause of intolerance.
1.Primary lactose intolerance
Primary lactose intolerance is associated with natural decline in the enzyme levels which is age related and without any external factors. In infancy and early childhood, the levels of the enzyme are enough in the body to digest lactose but with the time the amount starts declining leading to lactose intolerance in many adults.
2. Secondary Lactose Intolerance
It is secondary to some disease or illness that affects the small intestine where lactase is produced. Most common diseases that affect the small intestine are Gastrointestinal diseases (e.g. Crohn’s disease, Celiac disease) Infections (e.g. gastroenteritis) and surgeries involving small intestine. Symptoms improve if we treat the underlying condition. This is the type of Lactose intolerance that develops later in the life and answers why lactose intolerance develops later in life and in adults.
3. Congenital Lactose Intolerance
There is a rare inherited condition in which there is mutation in the LCT gene. This genetic mutation causes complete absence of the lactase enzyme since birth. And these kids cannot tolerate Brest milk and formula milk containing lactose they require lifelong avoidance of lactose containing foods. And this is why lactose tolerance occurs in babies.
4. Developmental (Transient) Lactose Intolerance
This type of lactose tolerance is present infants that has underdeveloped digestive system due to premature birth or some pathologies. It usually improves as the baby grows, often resolving the intolerance. They usually develop symptoms after consuming milk.
When lactose intolerance develops in life? All these types of Lactose intolerance have different pattern of pathologies and different time of development in life. Congenital and developmental lactose intolerance develops at the time of birth while primary develops later in life whereas secondary type develops at any time in life.
Symptoms
There are different symptoms of lactose intolerance, and they have different amount of severity depending upon the amount of lactose intake and deficiency of Lactase in body. Here is how a person feels like to have lactose intolerance
Abdominal pain: Where is the pain of lactose intolerance? Lactose intolerance cause pain and abdominal cramps in the lower abdomen due to fermentation of lactose in the lower abdomen.
Bloating: Lactose fermenting in the colon produces gas in the abdomen that gives a feeling of fullness and swelling in the abdomen.
Diarrhea: Lactose intolerance, cause diarrhea due to the change the osmotic pressure in the colon.
Flatulence (Gas): Fermentation produces gas in colon that leads to excessive passing of gas.
Nausea and Vomiting: Disturbance in the stomach gives a sick feeling to the stomach which leads to vomiting.
Alot of people lactose intolerant people experience symptoms that are different from what have explained and ask different question like can lactose intolerance cause constipation? Can it cause headache? However, these symptoms have not been established as true symptoms of lactose intolerance and may have other causes that are related to lactose intolerance. Symptoms that are reported but have less scientific support are
constipation
headaches
fatigue
loss of concentration
muscle and joint pain
mouth ulcers
problems urinating
eczema
Effective ways to manage Lactose intolerance
The first step towards the effective management of lactose intolerance is the dietary management and sometimes vitamins are given to relief symptoms.
Dietary modifications in lactose intolerance:
Reduce lactose containing foods e.g. milk, soft cheese and ice cream. Use the alternatives available which provide similar nutritional benefits like Almond milk, Soya milk, or Oat milk into your diet.
2. Lactase Supplements
Lactase enzyme supplements can be taken before consuming dairy products to aid digestion. Expert consultation is required to determine the side effects in children and pregnant or breastfeeding women.
3. Acclimatization to lactose
By gradually introducing the lactose in small amounts in diet allows bacteria to adapt that helps bacteria to build tolerance towards it.
4. Nutritional Considerations
Dairy products are the primary source of some nutrients like calcium and vitamin D so the body become deficient of these nutrients so consider fortified foods or supplements to meet daily requirements.
5. Seek guidance
Seek guidance from dietician and health care providers to develop a balanced diet that meets nutritional needs avoiding the symptoms of the disease.
FAQs
How to diagnose lactose intolerance?
Mainly it is diagnosed with history pattern then by eliminating the lactose from diet for 2-3 weeks and observe symptoms. For the confirmation we perform the tests like Hydrogen breath tests, lactose tolerance test and stool acidity test.
According to American Psychiatric Association Major depressive disorder (MDD), another name for depression, is a prevalent and dangerous mood condition that has a detrimental impact on a person’s feelings, thoughts, and behavior. Persistent melancholy, a decline in interest in once-enjoyed activities, and a variety of emotional and physical issues are its hallmarks. The degree of depression varies and affects a person’s capacity to function in day-to-day life.
Sadness is a part of normal human emotions that arises as a result of some specific event such as failure, loss or disappointment. it is a temporary lower mood that lasts for a short period of time not affecting the normal functioning of life and subsides as the person adapts or find a solution. while contrary to that if symptoms last for at least two weeks without any triggering event and interfere with sleep, relationship, appetite and other normal daily activities it is termed as a clinical depression.
Prevalence and Global Impact
According to WHO depression is a common mental disorder. Globally an estimated of 5% of suffer from depression. An estimated 3.8% of people suffer from depression, which includes 5.7% of individuals over 60 and 5% of adults (4% of males and 6% of women). Depression affects over 280 million people worldwide (1). Women are almost 50% more likely than men to experience depression. Depression affects almost 10 percent of pregnant women and women who have recently given birth worldwide (2). Every year, almost 700,000 people lose their lives to suicide. The fourth most common cause of mortality for people aged 15 to 29 is suicide.
More than 75% of people in low- and middle-income countries do not obtain treatment for mental problems, despite the fact that there are proven, efficient treatments for them (3). Lack of funding for mental health services, a shortage of qualified medical professionals, and the stigma attached to mental illnesses are all obstacles to providing good care.
The Blog’s Objective
The purpose of this blog is to Inform the Public About Depression by providing a comprehensive understanding of depression, including its signs, causes, and various manifestations, the site seeks to refute myths and increase awareness. It aims to equip readers with the knowledge they need to recognize and treat depression in others or in themselves.
And To Inform Readers on Depression The blog seeks to dispel common myths and increase awareness by providing a thorough understanding of depression, including its symptoms, causes, and various manifestations. Giving readers the knowledge they need to recognize and treat depression in others or oneself is its goal.
Symptoms of depression
Even though depression can happen just once in a person’s lifetime, most people have several episodes. Symptoms of these episodes last for the majority of the day, almost every day, and can include
Feelings of sadness, tearfulness, emptiness or hopelessness
Angry outbursts, irritability or frustration, even over small matters
Loss of interest or pleasure in most or all normal activities, such as sex, hobbies or sports
Sleep disturbances, including insomnia or sleeping too much
Tiredness and lack of energy, so even small tasks take extra effort
Reduced appetite and weight loss or increased cravings for food and weight gain
Anxiety, agitation or restlessness
Slowed thinking, speaking or body movements
Feelings of worthlessness or guilt, fixating on past failures or self-blame
Trouble thinking, concentrating, making decisions and remembering things
Frequent or recurrent thoughts of death, suicidal thoughts, suicide attempts or suicide
Unexplained physical problems, such as back pain or headaches
The symptoms of depression are typically severe enough for many people to have visible difficulties with daily activities, including relationships with others, work, school, and social activities. Some people may be usually dissatisfied or unpleasant without truly understanding why.
Depression symptoms in children and teens
Although there may be some variations, the typical signs and symptoms of depression in kids and teens are comparable to those in adults.
Sadness, irritability, clinginess, concern, aches and pains, refusal to attend school, or underweight are some of the symptoms of depression in younger children. Teens may experience symptoms such as depression, irritability, anger, feelings of worthlessness and negativity, poor academic performance or attendance, feeling misinterpreted and overly sensitive, abusing drugs or alcohol recreationally, overeating or sleeping, self-harm, losing interest in everyday activities, and avoiding social situations.
Depression symptoms in older adults
Depression should never be treated lightly because it is not a typical aspect of aging. Sadly, older persons who suffer from depression frequently go undetected and untreated, and they may be unwilling to ask for assistance. In older persons, the symptoms of depression may be varied or less evident, including:
Personality changes or memory issues Aches or pains in the body Fatigue, appetite loss, difficulty sleeping, or lack of desire in sex that is not brought on by a sickness or drug Instead of going out to interact or try new things, people frequently prefer to stay at home. Suicidal thoughts or emotions, particularly in elderly males
When to see a doctor
As soon as possible, schedule a visit with your physician or mental health specialist if you are experiencing depression. Speak with a friend or loved one, a medical professional, a religious leader, or another person you trust if you are hesitant to get therapy.
Significantly detrimental life changes, stress, or trauma
Although depression can strike at any age, it usually first manifests in adulthood. Although children may exhibit more anger or anxiety than sorrow, depression in children and adolescents is now acknowledged to exist. High levels of anxiety in childhood are often the precursor to many chronic mood and anxiety disorders in adults.
Depression can co-occur with other significant medical conditions such diabetes, cancer, heart disease, chronic pain, and Parkinson’s disease, particularly in midlife or later in life. Research indicates that persons who suffer from depression and other medical illnesses often have more severe symptoms of both conditions, and these conditions are frequently worse when depression is present.
How is depression treated?
Even the most severe symptoms of depression are treatable. Treatment is more successful the earlier it starts. psychotherapy, medication, or a combination of the two are typically used to treat depression.
When a person does not improve after taking at least two antidepressant drugs, they may have treatment-resistant depression. Brain stimulation therapy can be something to look into if psychotherapy and medicine are ineffective at reducing depressed symptoms or if there is an urgent need for quick symptom alleviation.
Psychotherapies
People with depression can benefit from various forms of psychotherapy, commonly known as talk therapy or counseling, which can teach them new ways of thinking and acting as well as help them break bad patterns that make them feel depressed. Cognitive-behavioral therapy (CBT) and interpersonal therapy (IPT) are evidence-based methods for treating depression.
In certain situations, consumers can now obtain mental health care more easily and conveniently because to the rise of telehealth, which provides an alternative to in-person therapy. Virtual mental health care could be a simpler choice for those who were previously reluctant to seek mental health treatment.
Medications
Depression is frequently treated with antidepressants. They function by altering the way the brain makes or uses specific molecules related to stress or mood. Before you find an antidepressant that helps your symptoms and has tolerable side effects, you might need to try a few different ones. Usually, a drug that has previously helped you or a close relative will be taken into consideration first.
Antidepressants typically take 4–8 weeks to start working, and before mood improves, issues with hunger, sleep, and concentration frequently get better. Before determining whether a drug is good for you, it is crucial to allow it time to start working. Learn more about mental health medications.
Taking an antidepressant in addition to another medicine that might help it work better, like an antipsychotic or anticonvulsant, is another option for treating depression that is resistant to treatment. To determine the function of these more recent drugs in standard practice, more investigation is required.
Do not discontinue taking an antidepressant without first consulting a healthcare professional. Antidepressant users can experience a relapse of their depression symptoms after they stop taking the drugs on their own because they feel better. When you and your doctor determine it is appropriate to stop taking a drug, which is often after 9 to 12 months, the doctor will assist you in reducing your dosage gradually and securely. Withdrawal symptoms may occur if a medicine is stopped abruptly.
Brain stimulation therapies
Brain stimulation therapy can be something to consider if psychotherapy and medicine are unable to alleviate depressive symptoms. Many forms of brain stimulation therapy are currently available, some of which the FDA has approved for the treatment of depression. For mental illnesses like depression, additional brain stimulation treatments are still in the experimental stage of research.
Despite being less common than psychotherapy and medicine, brain stimulation therapies can be quite helpful in treating mental illnesses in patients who do not respond to other forms of treatment. For the majority of mental diseases, these therapies are employed only after psychotherapy and medication have been attempted, and they are typically used in conjunction with existing treatments.
Electricity is used in brain stimulation therapy to either activate or inhibit the brain. Either electrodes inserted on the scalp or electrodes implanted in the brain provide the electricity directly or indirectly. Applying magnetic fields to the head is another way to induce the electricity.
The following are the brain stimulation treatments that have the most evidence:
ECT, or electroconvulsive treatment
Transcranial magnetic stimulation that is repeated (rTMS)
Stimulation of the vagus nerve (VNS)
Therapy for magnetic seizures (MST)
DBS, or deep brain stimulation
The two most popular brain stimulation treatments are rTMS and ECT, with ECT having been used for the longest. The other treatments are more recent and are still regarded as experimental in certain situations. For the treatment of particular mental illnesses, other brain stimulation techniques might also be promising.
The FDA has approved ECT, rTMS, and VNS to treat severe depression that is resistant to treatment. They can be useful for patients who have not responded to traditional forms of treatment, for those for whom drugs are unsafe, and in extreme situations requiring quick action, as when a patient is hungry, suicidal, or catatonic.
To treat depression and other mental illnesses, more forms of brain stimulation therapy are being researched. Before receiving brain stimulation therapy, discuss the possible advantages and disadvantages with your healthcare professional. To know more about brain stimulation therapies.
Which natural products can treat depression
No natural products for the treatment of depression have received FDA approval. Some people treat depression using natural products like vitamin D and the herbal dietary supplement St. John’s wort, despite the fact that research is still ongoing and results are conflicting. But there may be dangers associated with these products. Natural goods and dietary supplements, for example, may reduce the efficiency of certain pharmaceuticals or interact with them in ways that are harmful or even fatal.
Consult a healthcare professional before using vitamin D, St. John’s wort, or any other natural products or dietary supplements. The safety and efficacy of these and other natural products need to be thoroughly investigated.
One popular treatment option for those with seasonal affective disorder (SAD) is daily morning light therapy Except for those who have particular eye conditions or are taking medications that make them more sensitive to sunlight, light therapy devices are safe and significantly brighter than standard indoor lighting. Evaluation, therapy, and follow-up by a health care professional are highly suggested, as is the case with any depression interventions. Light therapy’s effectiveness for treating non-seasonal depression is still being investigated.
Fear is an alarm response to current or impending danger (actual or perceived), while anxiety is a future-focused mood state linked to preparing for potential, upcoming bad occurrences. This perspective compares the animal predatory imminence continuum to human fear and anxiety. In other words, fear relates to an animal’s state during predator contact or impending contact, while anxiety relates to an animal’s state during a possible predatory attack.
According to the definitions of anxiety and fear, Lang categorized the symptoms of fear and anxiety into three responses: verbal-subjective, overt motor acts, and somato-visceral activity. Within this system, the symptoms of anxiety include worry (verbal-subjective), avoidance (overt motor acts), and muscle tension (somato-visceral activity), while the symptoms of fear include thoughts of impending danger (verbal-subjective), escape (overt motor), and a strong autonomic surge that causes physical symptoms like sweating, shaking, palpitations, and nausea (somato-visceral).
Anxiety disorder prevalence was gathered from 87 studies conducted in 44 different countries. Prevalence estimates for the previous year ranged from 2.4% to 29.8%, while current prevalence estimates ranged from 0.9% to 28.3%. The largest percentage of variability was explained by substantive characteristics, such as gender, age, culture, conflict and economic status, and urbanicity. An extra 13% of the variation between studies was explained by methodological factors (prevalence period, number of illnesses, and diagnostic tool) in the final multivariate model. After accounting for methodological variations, the current prevalence of anxiety disorders worldwide was 7.3% (4.8–10.9%), with the range being 5.3% (3.5–8.1%) in African cultures and 10.4% (7.0–15.5%) in Euro/Anglo cultures.
Global Prevalence of Anxiety Disorders and Regional variation
Geographical differences in the point prevalence of anxiety disorders ranged from 2.1% (1.8–2.5%) in East Asia to 6.1% (5.1–7.4%) in North Africa/Middle East, a threefold difference. Latin America, high-income areas, and areas with a recent history of conflict have higher rates of anxiety. Estimates were highly questionable, especially for regions for which no data were available. To determine if geographical disparities in the prevalence of anxiety disorders are significant or the result of methodological or cultural differences, more study is needed.
Although there was a 36% increase in the crude number of cases, this was explained by shifting age patterns and population growth. In 1990, the estimated point prevalence of anxiety disorders was 3.8% (3.6–4.1%), and in 2010, it was 4.0% (3.7–4.2%). In 1990 (4.2–4.7%) and 2010, the prevalence of MDD remained constant at 4.4% (4.1–4.7%). But according to eight out of the eleven GHQ trials, psychological discomfort significantly increased over time.
Influence of culture on anxiety
The experience and expression of emotions are influenced by a person’s cultural background. After reviewing the recent literature on cross-cultural aspects of anxiety disorders, we identified some culturally related ethnopsychology/ethnophysiology factors (the culture’s conceptualizations of how the mind and body function) and contextual factors that influence anxiety disorders. While contextual factors are linked to the social norms and rules that may contribute to anxiety, such as self-construals and individualism vs. collectivism, we will discuss “khyâl cap” (“wind attacks”), taijin kyofusho, and ataques de nervios, three well-known examples of culturally specific expressions of anxiety disorders that have all been included in the DSM-5 list of cultural concepts of distress.
Due to linguistic, evaluation, political, geographic, and sociodemographic variations, it is challenging to directly compare prevalence rates between cultures. Comparing several cultural groups within the same multicultural nation may yield a more accurate estimate of the differences in prevalence rates between them. one such study evaluated the prevalence rates of anxiety disorders within a large representative sample of the US population, oversampling Hispanic Americans (N = 3,615), Asian Americans (N = 1,628), and African Americans (N = 4,598) [4]. The findings demonstrated that compared to all other racial groups, Asian Americans consistently endorsed symptoms of all four main anxiety disorders—social anxiety disorder, panic disorder, generalized anxiety disorder, and post-traumatic stress disorder—less frequently. Compared to African Americans (8.6%, 4.9%, 3.8%, respectively), Hispanic Americans (8.2%, 5.8%, 4.1%, respectively), and Asian Americans (5.3%, 2.4%, 2.1%, respectively), White Americans (N = 6,870) consistently supported symptoms of social anxiety disorder (12.6%), generalized anxiety disorder (8.6%), and panic disorder (5.1%). Compared to the White American subgroup (6.5%), Hispanic Americans (5.6%), and Asian Americans (1.6%), African Americans were more likely to meet the criteria for post-traumatic stress disorder (PTSD) (8.6%).
Cultural Perceptions of anxiety and Stigma with it
A meaningful and statistical relationship between these variables was hypothesized, and Asians and Westerners would differ in this relationship. The study included 287 British Asian, western European, and Pakistani individuals. Method: Participants completed the Orientations to Seeking Professional Help (Fischer and Turner 1970), Mental Distress Explanatory Model Questionnaire (Eisenbruch 1990), and demographic data sheet. Results: Similar positive opinions toward obtaining professional treatment for psychological distress were found in British Asians, Westerners, and Pakistanis. The three groups’ mental anguish causation attributions differed significantly. Culture did not predict a positive attitude to seeking professional help, but causal views of mental suffering did for British Asian and Pakistani populations. Western attitudes to requesting aid were not predicted by beliefs. Conclusion: Culturally influenced mental distress causation beliefs influence Asians’ attitudes toward obtaining professional care for psychological issues. The implications for research and better health services for the British Asian minority community are highlighted.
There is a huge difference between the help seeking behaviors of the different communities. The decision of whether or not an individual will seek professional assistance or rely on traditional healing practices is influenced by cultural norms. For instance, due to cultural beliefs and a lack of trust in established healthcare institutions, some Latino populations may seek the advice of folk healers rather than professional medical professionals.
Impact of Acculturation
Acculturation is defined as the process by which a person accepts, learns, and adapts to a new cultural setting as a result of being immersed in a different culture or when someone is introduced to another culture. The phrase “culture change” is used in workplaces and public policymaking to highlight how cultural capital affects both individual and collective behavior. The reconstruction of a society’s cultural concept has been referred to as “repositioning of culture”. It emphasizes how social and cultural capital influence decision-making and how they combine with other elements, such as information accessibility or the financial incentives people face to influence their behavior.
The first psychological theory of acculturation was proposed in W.I. Thomas and Florian Znaniecki‘s 1918 study, The Polish Peasant in Europe and America found that Polish immigrants in Chicago showed three types of acculturation that match three personality types: the Bohemian type adopted the host culture and gave up their own culture, the Philistine type failed to adopt the host culture but kept their own culture, and the creative type was able to adapt to the host culture while keeping their own culture.
Getting used to a new society can be stressful for immigrants and refugees, which can make their anxiety symptoms worse. Language barriers, discrimination, and losing social support are some of the things that make this worry worse. It can vary with different generations depending on how much they adopt new culture and how much they hold on to traditional values, first-generation immigrants may feel different amounts of anxiety than later generations. This can also apply to the new workplace when they change their working environment, they experience different symptoms of anxiety or stress that is associated with the unable to adapt with the new culture a process explained as marginalization (sidelined in new culture) in the literature.
Contributing Factors to Anxiety
There are a lot of biological, psychological, environmental, and lifestyle factors that can lead to anxiety conditions. To manage and avoid problems well, you need to know about these factors that affect them. Here’s a thorough look at the things that can cause anxiety.
1.Biofactors
Genetic: A genetic susceptibility to anxiety is often found in families. Research Source: According to Smoller et al. (2009) in Nature Reviews
Neurotransmitter Imbalances: Neuroscience, genetic differences in neurotransmitter pathways are associated to anxiety disorders. Increased anxiety can result from dysregulation of neurotransmitters such as serotonin, dopamine, and GABA. Example: Low GABA levels enhance brain excitability, a hallmark of anxiety.
2.Psychological Factors
Negative Thought Patterns: People who have low self-esteem, perfectionism, and persistently negative thoughts are more likely to experience anxiety. Catastrophizing is one cognitive distortion that makes anxiety symptoms worse.
Trauma and Adverse Experiences: Anxiety is more likely to develop in those who have experienced trauma, particularly as children. Citation for Research: The effect of Adverse Childhood Experiences (ACEs) on mental health outcomes was covered by Felitti et al. (1998).
3.Environmental Factors
Stressful Life Events: Anxiety can be triggered by situations like losing one’s job, being divorced, or losing a loved one.
Social and Economic Stressors: Unemployment, social inequality, and financial instability all play a big role. (The Lancet Psychiatry)
4.Lifestyle Factors
Absence of Physical Activity: Since exercise is known to lower stress and elevate mood, sedentary behavior might make anxiety worse. For instance, endorphins, which are released during aerobic activities like swimming or running, can help reduce anxiety.
Poor Diet: Processed foods and sugar-rich diets can have an impact on mood and brain function. (Nutritional Neuroscience)
Chronic sleep deprivation impairs emotional control and makes people more susceptible to worry. For instance, the body’s stress reaction is heightened when restorative sleep is not possible.
5.Cultural and Social Influences
Cultural Norms and Expectations: Anxiety can result from social pressure to fit in or achieve. For instance, social anxiety may arise in collectivist cultures as a result of the dread of disappointing family members.
Digital Overload: Stress and anxiety levels might rise as a result of the continuous barrage of information and social comparisons on digital platforms. (JMIR)
6.Physical Health Conditions
Chronic Illnesses: Because of ongoing health problems, conditions including diabetes, heart disease, and asthma are frequently linked to increased anxiety levels.
Substance Abuse: Reliance on drugs, alcohol, or caffeine can exacerbate or cause anxiety symptoms.(Journal of Anxiety Disorders)
7.Environmental Toxins and Climate Factors
Pollution and Toxins: Neurotoxic chemicals and air pollution can alter brain function, raising the risk of anxiety. Climate Change Anxiety: Chronic concern is exacerbated by growing awareness of environmental crises around the world, especially among younger generations. (American Psychologist)
Targeted prevention and treatment efforts are made possible by an understanding of the complex elements that contribute to anxiety. Understanding how biology, environment, and lifestyle interact is crucial to creating comprehensive strategies for successfully managing anxiety.
Treatment of Anxiety
1.Pharmacological Treatment
The main factor influencing the choice of a specific medicine class or combination that is appropriate for treating anxiety is the patient’s level of bravery. In the behavioral modification and treatment, the level of anxiety experienced by the patient, the knowledge of the doctors, and the behavioral therapist. Other factors include comorbid diseases and the way the patient reacts to treatment.
First-Line Drugs
(i). Selective Serotonin Reuptake Inhibitors (SSRIs) : When SSRIs are insufficient, the patient should switch to clomipramine; augmentation can be achieved with low-dose antipsychotics (aripiprazole, risperidone) and low-dose anticonvulsants (pregabalin, lamotrigine). These medications increase the amount of serotonin in the synapses by blocking the reuptake of serotonin (5HT) by presynaptic neurons. When SSRIs are insufficient, the patient should switch to clomipramine; low-dose antipsychotics (risperidone, aripiprazole) and low-dose anticonvulsants (pregabalin, lamotrigine) might be used for augmentation.
(ii). Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs): They work by preventing the presynaptic neuron from reabsorbing serotonin and norepinephrine, which raises their concentration at the junction. In patients with panic disorder, the anxiolytic effects of this class of medications may manifest in 2-4 weeks.
Second-Line Drugs
(iii). Tricyclic Antidepressants (TCAs): They work by blocking the transporters of serotonin and norepinephrine, which stops them from being reabsorbed and raises their concentration at the synapse. This increases neurotransmission. Effectiveness: Tricyclic antidepressants work well for agoraphobia and panic disorder. When treating OCD, clomipramine is the medication of choice when SSRIs or SNRIs didn’t work.
(iv). Benzodiazepines (BDZ): They work by attaching to and turning on the GABAA receptor, which causes GABA to attach to its receptor, the chloride ion channel opening, and the chloride ion entrance that results in cellular inhibition. Their effects can be observed within 1-2 minutes of ingestion because they have a far shorter onset than all other kinds of antianxiety medications.
Third-Line Drugs
v). Monoamine Oxidase Inhibitors (MAOIs): Effective in treating social anxiety disorders and panic disorder
(vi). Reversible Inhibitors of Monoamine Oxidase (RIMA): Moclobemide is helpful in treating social anxiety disorder.
(vii). Atypical Antipsychotics (Second-generation antipsychotic): Quetiapine, Olanzapine, Risperidone, Aripiprazole. Quetiapine is helpful in treating GAD at the dose of 50 to 300mg/day, panic disorder, and OCD, while risperidone is given at a dose of 0.5-2mg/day.
(viii). Azapirones: The buspirone work activates the 5-HT1A-serotonergic receptor or blocks the D2-dopaminergic receptor.
(ix). Anticonvulsants: OCD, panic disorder, Patients taking these drugs may be relieved of anxiety symptoms within 24hours.
(x). Antihistamines: Treatment of GAD.
Medicinal Plants Available to us Used in the Treatment of Anxiety
(i). Valeriana Officinalis (Valerian Extract): Previously used to treat anxiety, this plant had negative side effects such as headaches and GIT disturbances.
(ii). Lavandula angustifolia (Lavender Oil): This oil has been used to treat GAD with equivalent efficacy to lorazepam.
(iii). Hypericum Perforatum (St John’s Warts): This plant’s extract was once used to cure anxiety, but it didn’t work; side effects include weight gain, impotence, and suicide.
(iv). Passiflora Incarnata (Passionflower): It treats anxiety with similar effectiveness to BDZ; side effects include drowsiness, sleepiness, can raise the blood pressure.
(v). Galphimia Glauca (Extract): Another helpful phytomedicine for GAD is this extract, which has been shown to be just as successful in treating the condition as lorazepam in a randomized controlled clinical trial.
(vi). Piper Methysticum (KAVA): Originally used to cure anxiety, this herb was eventually removed because of its hepatotoxic sedative properties.
Non-Pharmacological Treatment: Strategies to beat anxiety: How to calm anxiety
1.Electroconvulsive Therapy: This entails placing a tiny electrode while using stereotactic MRI monitoring. Brief electrical shocks will induce neuronal firing and be used to treat mood disorders, panic attacks, and agoraphobia.
2.Vagal Nerve Stimulation: In order to treat panic disorder and agoraphobia, this entails stimulating fear control regions like the amygdala, hippocampus, insula, and frontal cortex via afferent vagal nerves to produce an inhibitory neurotransmitter.
3.Surgery: This is true for social phobia and resistant GAD. These consist of limbic leucotomy, anterior capsulotomy, subcaudate tractotomy, and anterior cingulotomy.
4. Cognitive Behavioral Therapy (CBT): CBT is generally a very important part of treating anxiety; in the case of panic disorder, it is more crucial than medication. The cognitive behavioral therapy (CBT) component used to treat panic disorder consists of coping mechanisms, exposure to the panic-inducing environment, altering negative thinking, and psychoeducation. CBT can be done once a week for a few hours for up to 12 to 16 weeks, however daily one-hour sessions were more successful.
“It’s not how long we’re using screens that really matters; it’s how we’re using them and what’s happening in our brains in response,” says Rich, director of the Center on Media and Child Health at Boston Children’s Hospital, associate professor of paediatrics at HMS, and associate professor of social and behavioural sciences at the Harvard T.H. Chan School of Public Health.
During the Covid pandemic most of the people were doing work from home, Daycares were closed, all physical activities were stopped and all schools shifted to online classes. At that time, we saw a rising trend in the increased screen time not only in the children but also in the adults which was associated to increased level of anxiety. But even after the Covid we have seen the rising trends in the excessive use of mobile phone in the children.
Children in the developing age, their brain is constantly building new neural connections while pruning away the less used one and social media has a strong impact on that. The children need to have a diverse menu of online and offline experience to let their brains wander and grow properly.
The American Academy of Pediatrics’ (AAP) gives the guidelines for the children for children screen time: American Academy of Pediatrics
Infants Under 18 Months: Parents should avoid screen time, except for video chatting. At this the physical interaction helps most in brain development.
Children Aged 18 to 24 Months: If you are introducing digital media make sure to keep a check on children and provide them with the quality content. Co viewing helps in their comprehension and Learning.
Children Aged 2 to 5 Years: The parents should limit the screen time to one hour per day of quality content and co viewing is encouraged to help children understand what they are viewing.
Children Aged 6 Years and Older: There should be a constant limit to screen time to make sure that it is not interfering with sleep, physical activity, and other healthy behaviours. Focus should be on the quality content and balance with the other activities.
Signs of anxiety in children related to use of social media:
Sleep disturbances: They have a disturbance with their sleep pattern and timings. Children over six years of age need up to 12 hours of sleep over a 24-hour period, but the excessive use of social media is disturbing it.
Low energy: Due to lack of sleep they are unable to focus on anything and it leads to low energy during the day and a dampened mood.
Social media makes them emotional: If your child is becoming irritable, anxious or irritable over the small things you need to check it might be because of social media.
They want to be alone: If parents notice that their children are retreating to their rooms more than usual and spending more time in their room? it might be because of digital media they are using in their rooms.
They refuse to share passwords: Parents should be concerned if their children refuse to share their social media passwords. According to research by the Children’s Commissioner’s Office, 45 percent of the children aged 08 to 17 have seen content that was inappropriate or made them worried or upset.
Reduced attention span: Tiktok brain is the real phenomena by the excessive usage of short videos platform children are unable to focus on anything for a longer period. This is seen in the children who use these platforms have significantly decreased attention span.
Declining school performance: Increase in screen time leads to decrease in the attention span and inability to focus on anything so there is a significant decline in the school performance of the children who use social media excessively.
Strategies for parents:
It is clear that Screen time must cut down, but the question is how we can cut it down and about what you might do instead.
Play board games. If you feel like it, change the rules (which may make them more accessible for younger children). You can even make up your own board game
Bake! There’s nothing like making sweets to make everyone happy.
Paint and draw
Build things — from blocks, cardboard, anything
Read books with actual pages. Graphic novels and comic books count.
Play instruments. Virtual lessons — and free online tutorials — are available.
Encouraging sports and playing with them their favorite sports.
Conclusion:
There is increased amount of anxiety and restlessness in children due to excessive use of digital media that is not an issue that parents can deny or turn a blind eye to it as if they don’t take necessary steps now it will lead to some serious health conditions with hazardous effects. So, it is advisable to cut down the social media usage by adopting the appropriate alternative measures.
Air pollution poses a significant health risk, impacting not only respiratory health but also cardiovascular health. Initially, the focus was primarily on the harmful effects of smog and air pollution on the respiratory system. However, recent studies reveal that cardiovascular diseases account for the majority of pollution-related mortality.
Research shows that exposure to certain pollutants correlates with increased mortality rates. Specifically, long-term exposure to fine particulate matter (PM2.5) and short-term exposure to coarse particulate matter (PM10) are linked to serious health risks. Air pollution is associated with several cardiovascular conditions, including acute myocardial infarction, heart failure, cardiac arrhythmias, atherosclerosis, and even cardiac arrest.
Addressing this issue requires strong environmental regulations, but individuals can also take steps to reduce their risk. Staying indoors on high pollution days and considering the use of a face mask, particularly when particulate matter levels are high, can help minimize exposure. While the use of masks remains debated, they may offer protective benefits under certain conditions. (1)
Health Risks Linked to PM2.5 Exposure: Findings from the American Cancer Society
According to data from the American Cancer Society (ACS) cohort, a 10 μg/m³ increase in annual average exposure to fine particulate matter (PM2.5) is associated with a notable rise in mortality rates. Specifically, long-term all-cause mortality increases by approximately 4%, cardiopulmonary mortality by 6%, and lung cancer mortality by 8%. These findings underscore the serious health risks posed by PM2.5 exposure and highlight the importance of minimizing air pollution exposure to protect public health. (2)
Link Between PM2.5 and Acute Myocardial Infarction (AMI) Onset
To assess whether high concentrations of ambient particulate matter can trigger acute myocardial infarction (AMI), Peters and colleagues conducted a case-crossover study as part of the Determinants of Myocardial Infarction Onset Study. They interviewed 772 AMI patients, analyzing exposure to PM2.5. The study found that elevated PM2.5 concentrations were linked to a heightened, short-term risk of AMI onset, particularly within two hours and up to one day following exposure. This research highlights the potential for fine particulate matter to act as a trigger for heart attacks in vulnerable individuals. (3)
Potential Mechanisms Linking Air Pollution to Cardiovascular and Respiratory Diseases
Impact of Combustion Particles on Heart Rate Variability and Cardiac Health
Animal studies indicate that exposure to combustion particles can reduce heart rate variability, a measure of cardiac autonomic function. Reduced heart rate variability is associated with disruptions in the autonomic nervous system, which regulates heart rhythms. This alteration in cardiac function is considered a significant risk factor for sudden cardiac death and fatal arrhythmias, highlighting the potentially deadly impact of air pollution on heart health. (4)(5)(6)
Research in humans has confirmed the cardiac effects of air pollution seen in animal studies. In the German MONICA (MONItoring of trends and determinants in CArdiovascular disease) study, heart rates were found to increase with higher concentrations of sulfur dioxide (SO₂) and carbon monoxide (CO). These findings suggest that exposure to certain air pollutants can elevate heart rates, potentially placing individuals at greater risk for cardiovascular events. (7)
Three studies conducted in the United States, including a total of 54 subjects, found a reduction in heart rate variability with the increases of PM10 or PM2.5. (8)(9)(10)
ACS Cancer Prevention II Study: Linking Fine Particulate Matter to Mortality
The largest study to date on the effects of air pollution, the ACS Cancer Prevention II study, enrolled nearly 500,000 individuals over a 16-year period. Findings showed that each 10 μg/m³ increase in fine particulate matter (PM2.5) was associated with increases in all-cause mortality by 4%, cardiopulmonary mortality by 6%, and lung cancer mortality by 8%.
These findings suggest that impaired cardiac autonomic function may serve as a critical link between air pollution and cardiovascular mortality, potentially triggering fatal tachyarrhythmias and contributing to increased risk of sudden cardiac death in polluted environments.
Air Pollution’s Role in Cardiovascular Health Risks
Acute myocardial Infection
Exposure to particulate matter, specifically PM10 and PM2.5, has been shown to cause systemic oxidative stress and inflammation, along with elevated serum fibrinogen levels. These changes contribute to increased platelet reactivity, endothelial dysfunction, and plaque instability—factors that heighten the risk of cardiovascular events. Studies have also linked PM10 exposure to the triggering of acute myocardial infarction (AMI), underscoring the serious cardiovascular risks posed by air pollution. (11)
Heart failure
The connection between smog exposure and heart failure is less immediately apparent, but the underlying mechanism involves a supply-demand mismatch in the heart. Increased heart rate, elevated blood pressure, and higher filling pressures can all contribute to this mismatch. Additionally, reduced contractility and increased myocardial injury due to air pollution further exacerbate the strain on the cardiovascular system, potentially triggering or worsening heart failure.
Arrhythmias
A study conducted in São Paulo investigated the relationship between environmental pollution and the occurrence of arrhythmias that required emergency department visits. The study found a significant association between increases in carbon monoxide (CO), nitrogen dioxide (NO₂), and particulate matter (PM10) and the occurrence of various arrhythmias. These included sinus tachycardia, atrial fibrillation (AF), atrial flutter, supraventricular tachycardia, and ventricular tachycardia and fibrillation. The findings highlight the impact of air pollution on heart rhythm disturbances, underscoring the cardiovascular risks of exposure to these pollutants. (12)
Predisposition to Risk from Air Pollution
Not everyone is equally affected by air pollution; certain groups are more vulnerable due to preexisting health conditions. There is a significant correlation between air pollution exposure and individuals with cardiovascular problems, diabetes, impaired glucose tolerance, smoking habits, age, and chronic obstructive pulmonary disease (COPD). These populations are at a higher risk of experiencing severe health effects from air pollution, highlighting the need for targeted public health strategies to protect these vulnerable groups. (13)
Cardiac arrest
A study conducted in Rome involving over 5,000 individuals found that exposure to particulate matter (PM) and carbon monoxide (CO) were predictive of sudden cardiac arrest. The research highlighted that elderly individual (aged >65 years), those with hypertension, and individuals with chronic pulmonary diseases were particularly predisposed to experiencing sudden cardiac arrest due to air pollution exposure. These findings underscore the heightened cardiovascular risks faced by vulnerable populations living in polluted environments. (14)
Congenital heart
An American study found a direct relationship between exposure to carbon monoxide (CO) and the occurrence of ventricular septal defects. Additionally, elevated levels of ozone (O₃) were correlated with valvular, truncal, and aortic defects. However, no significant correlation was found between particulate matter (PM) or other pollutants and these specific types of cardiac defects. These findings highlight the potential role of specific air pollutants in the development of congenital heart defects. (15)
Tips to reduce health risk in individuals exposed to air pollution
Stay Indoors on High Pollution Days: Limit outdoor activities, especially physical exertion, on days with high pollution levels, particularly near pollution sources.
Reduce Outdoor Air Infiltration: Minimize the entry of outdoor air pollutants into indoor spaces by closing windows and using weatherstripping to seal gaps.
Use Air Purifiers: Install air filters or purifiers in indoor spaces to reduce the concentration of airborne pollutants like particulate matter (PM) and volatile organic compounds (VOCs).
Consume Sulforaphane-Rich Foods: Include foods high in sulforaphane-based antioxidants, such as broccoli, cabbage, cauliflower, and Brussels sprouts, to help counteract the oxidative stress caused by pollution.
Fish Oil Supplementation: Consider fish oil supplements, which are rich in omega-3 fatty acids, known for their anti-inflammatory properties that may help protect against pollution-related cardiovascular issues.
Use Respirators or Face Masks: On days with high air pollution, especially if you are outdoors, use a respirator or face mask designed to filter out particulate matter (PM) and other harmful pollutants.
Conclusion
Experimental studies have shown a direct relationship between cardiovascular diseases (CVD) and air pollution, particularly smog. Fine particulate matter (PM) and carbon monoxide (CO) have been linked to several cardiovascular conditions, including acute myocardial infarction (AMI), arrhythmias, heart failure, cardiac arrest, and congenital heart defects. These pollutants contribute significantly to overall mortality. While large-scale societal interventions are most effective in combating the health effects of air pollution, individuals can take personal steps to reduce their risk of exposure and protect their cardiovascular health.
Atmospheric pollution suspended in humid air is known as smog. Exposure to these harmful substances is a significant modifiable risk factor contributing to various hazardous health conditions. Substances present in smog that negatively impact public health include particulate matter (PM) of various sizes—PM2.5, PM2.5–10, PM10—along with sulfur dioxide, nitrogen dioxide, ozone, carbon monoxide, and lead. Special attention is given to the smaller dust particles (PM2.5 and PM10) because they can penetrate the lower respiratory tract, leading to serious respiratory health issues. This article will discuss the effects of smog pollutants on the development and exacerbation of respiratory diseases such as asthma, chronic obstructive pulmonary disease (COPD), respiratory infections, and lung cancer.
Mechanism of damage
“How Smog Affects the Respiratory and Cardiovascular Systems: The Impact of PM1 Dust Particles”
Smog, a harmful air pollutant, affects multiple organs and systems in the body, with the respiratory and cardiovascular systems being the most vulnerable. Exposure to smog can lead to severe health complications, as it contains various particulate matter (PM) sizes, including dangerous fine particles like PM1, which are smaller than one micrometer. These particles are so tiny that they can easily bypass the blood-air barrier, entering the bloodstream and causing direct tissue damage. While larger dust particles (PM10) are typically blocked in the upper respiratory tract, smaller particles such as PM1 can penetrate deeper into the lungs, reaching the lower respiratory tract. PM1 particles can even pass from the lung alveoli into the microcirculation, further increasing the risk of systemic health problems, including respiratory diseases and cardiovascular conditions.
Historical Stats
“Impact of Air Pollution on Life Expectancy and Mortality“
Based on 2005 data, exposure to particulate matter (PM2.5) shortens the average lifespan of EU citizens by approximately 8 months, collectively depriving them of 3.6 million years of life each year. Globally, PM2.5 exposure is ranked as the fifth leading risk factor for death. Nitrogen dioxide (NO2) is the second most significant health risk, followed by ozone, which is responsible for approximately 21,000 deaths annually in the EU. Similar findings were reported in Poland in 2012, with annual deaths attributed to PM2.5, nitrogen dioxide, and ozone exposure estimated at 44,600, 1,600, and 1,100, respectively. Studies have shown that for every 10 µg/m³ increase in fine particulate matter (PM2.5), there is a corresponding 4% increase in all-cause mortality, a 6% rise in cardiopulmonary mortality, and an 8% increase in lung cancer deaths.
Worsened Symptoms of different respiratory diseases due to smog are given below:
Acute Respiratory Irritation
Coughing
throat irritation
a feeling of tightness in the chest
Increased Coughing
shortness of breath
Wheezing
Sore Throat
Nasal and Sinus Congestion
Chest Tightness or Pain
Asthma
Increased frequency and severity of asthma attacks
More intense wheezing, coughing, and shortness of breath
Persistent chest tightness
Reduced effectiveness of inhaled medications, making it harder to manage symptoms
More frequent COPD exacerbations, often requiring medication adjustment or hospitalization
Worsening shortness of breath, especially when doing physical activities
Chronic cough with increased phlegm, possibly discolored or thicker than usual
Greater fatigue due to the effort required to breathe
Intensified Coughing and Mucus Production
Increased Chest Tightness and Discomfort
Worsening Wheezing
Fatigue and Reduced Physical Stamina
Headache, Dizziness, and Mental Fog
Increased Risk of Respiratory Infections
Bronchitis and Emphysema
Increased Coughing
More Mucus Production
Worsened Shortness of Breath
Chest Tightness
Increased Risk of Respiratory Infections
Fatigue
Decreased Exercise Tolerance
Worsened Wheezing
Increased Chest Discomfort
Strategies to Reduce Respiratory Diseases Due to Smog
Stay Indoors
On high-smog days, stay indoors to reduce exposure to harmful pollutants.
Use air conditioning or air purifiers with HEPA filters to improve indoor air quality.
Limit Physical Exertion
Avoid outdoor activities during times of high pollution.
Physical exertion increases the demand for oxygen and worsens symptoms of breathlessness.
Use Medications as Directed
People with bronchitis or emphysema should continue to use prescribed medications, including inhalers, nebulizers, or steroids, to help manage symptoms
Consult with a healthcare provider about adjusting medications during high-pollution periods
Wear Protective Masks
When going outside is necessary, wear an N95 mask or another form of filtration mask to reduce inhalation of harmful particles.
Monitor Air Quality
Check local air quality indices (such as the AQI) to stay informed about pollution levels. If levels are high, take extra precautions to limit outdoor activities.
Stay Hydrated
Drink plenty of fluids to help thin mucus, making it easier to clear from the airways
Government Actions for Cleaner Air
Enforce air quality standards to limit PM2.5, NO2, and ozone levels.
Promote renewable energy and create more green spaces to reduce smog.
Eco-Friendly Transportation
Encourage the use of electric vehicles (EVs) and public transport to reduce emissions
Support carpooling and ridesharing to cut down on vehicle pollution.
Air Quality Monitoring & Awareness
Implement real-time air quality monitoring and raise awareness about smog risks.
Educate the public on using indoor air purifiers to reduce exposure.
Protective Measures for Individuals
Stay indoors during high pollution periods, especially for those with asthma or COPD.
Use N95 masks and HEPA air purifiers to filter harmful pollutants.
Healthcare Interventions
Focus on early diagnosis and management of respiratory diseases like asthma and COPD.
Promote vaccinations for flu and pneumonia to reduce complications from smog exposure.
Research & Technological Solutions
Fund research into the health effects of air pollution and develop pollution control technologies.
Invest in advanced air filtration to improve indoor air quality.
When to Seek Medical Attention
If the following symptoms occur, it’s essential to seek immediate medical attention:
Severe shortness of breath or difficulty breathing that doesn’t improve with medication or rest
Persistent chest pain or a feeling of tightness in the chest
Bluish or gray discoloration of lips or nails, indicating low oxygen levels
Worsening cough or changes in mucus color or consistency
Confusion, dizziness, or fainting, which may indicate inadequate oxygen supply to the brain
“Smog, a combination of smoke and fog, is a type of air pollution mainly present in industrial and urban areas. It is produced by the burning of fossil fuels, which releases pollutants like sulfur dioxide, nitrogen dioxide, and ozone.”
Types of smog
It has two major types depending upon the type of weather they are produced in and pollutant it has in it
“1. Photochemical smog (also known as summer or Los Angeles-type smog)”
This type of smog is mainly present in warm, sunny, and dry climates. It appears as a brownish haze in the environment and mainly consists of nitrogen oxides (NOx), volatile organic compounds (VOCs), and ground-level ozone (O₃), producing smog after reacting with sunlight.”
“2. Sulfurous smog (also known as winter or London-type smog)”
This type of smog is mainly present in cool, damp, and foggy conditions. It appears as a thick, grayish haze or fog and primarily consists of sulfur oxides (SOₓ) and particulate matter.
Major Health hazards of smog
Smog can cause many health conditions which includes:
1.Respiratory Problems
Smog consists of particles that can irritate the lungs and damage the respiratory system it can lead to the following conditions
Acute respiratory irritation
Acute exacerbation of asthma
Chronic bronchitis and COPD
Reduced Lung function
Respiratory infection
Development of chronic respiratory Diseases
Impaired lung development in children
2.Eye Problems
Smog particles cause various eye conditions, ranging from mild discomfort to serious diseases. The following are eye conditions caused by smog:
Dry eye syndrome
Conjunctivitis (pink eye)
Allergic eye reactions
Keratitis (corneal inflammation)
Increased risk of cataracts
Worsening of glaucoma
Macular degeneration
Ocular surface disease
3.Cardiovascular problems
Smog consists of particulate matter (PM2.5 and PM10), nitrogen dioxide (NO₂), sulfur dioxide (SO₂), carbon monoxide (CO), and ground-level ozone (O₃). These particles penetrate the bloodstream, leading to a wide range of cardiovascular conditions:
Increased risk of heart attacks (myocardial infarction)
Hypertension (high blood pressure)
Arrhythmias (irregular heartbeat)
Stroke
Heart failure (congestive heart failure)
Systemic inflammation and oxidative stress
Blood clot formation (thrombosis)
4.Psychological Effects of smog
Smog and air pollution can affect mental health and well-being in several ways. It leads to a wide range of mental health issues due to its direct effects on the brain and indirect impacts on mood, stress levels, and overall quality of life.
Key Psychological Effects of Smog
Increased anxiety and stress
Depression and mood disorders
Cognitive decline and impaired memory
Sleep disorders
Reduced quality of life and social isolation
Increased risk of substance use as a coping mechanism
Behavioral changes and aggression
Feelings of helplessness and “eco-anxiety”
Historical Background
The Great Smog of 1952 In 1952, London faced an extreme episode of smog, now known as the Great Smog of London. The smog was so deadly that it caused widespread respiratory conditions, leading to approximately 4,000 immediate deaths and an estimated 12,000 deaths over the following months due to respiratory complications. Public transportation shut down as visibility plummeted, and even indoor spaces became filled with acrid smoke.
Beijing 2014 In February 2014, Beijing experienced severe smog that lasted from February 8 to February 28. This smog was rich in PM2.5 particulate matter, which is known to cause serious health issues and posed significant risks to public health.
Vulnerable Population
Children
Elderly people
Pregnant woman
Pre-existing respiratory and cardiovascular conditions
people living in low income and disadvantaged communities
workers in outdoor or polluted environment
Individuals with pre-existing mental health conditions
Urban populations
Prevention of Smog-Related Diseases
Limiting outdoor exposure and staying indoors, especially for vulnerable groups
Using protective masks like N95 and FFP2, which filter micro-particles such as PM2.5
Using air purifiers with high-quality filters indoors to reduce the concentration of harmful particles
Reducing vehicular emissions by avoiding unnecessary driving, switching off engines when idle, and using public transportation
Increasing public awareness through education and campaigns
