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Published on: Apr 04, 2020
1 minute read
By: Dr Vibhash Mishra

Corona Virus (COVID-19) Being Responsible

The world is in a state of panic with fear of Corona and perhaps rightly so. Official, semi-official and unofficial guidances are pouring in from all possible sources. Social media has been promoting the use of masks only for sufferers of Corona infection and those who are having symptoms of cough and fever. Some experts have gone to the extent of suggesting that the use of mask for members of the general public may even be harmful. It may promote a sense of complacency among people, a false sense of safety leading to negligence of other precautions. Masks may be so ill-fitting that the user has to touch it frequently to adjust it, which may lead to transmission of infection. The virus is supposed to be transmitted by droplets coughed out by the sufferers. The purpose of the mask used by these people is to stop passing on the droplets to others. While this notion seems to make sense, it may not be entirely true and the use of masks by people at large may still have some protective value. There may be people who are infected and not aware of it. Avoiding relatively close contact with such people at public places may not be easy in populous countries which are not locked down completely yet. Use of mask in that situation may provide some protection at least. After all the infected droplets need to be inhaled to cause further infection and a mask over the mouth and nostrils will prevent the inhalation to some extent. It seems, therefore, that discouraging people from using masks may be an irresponsible act. What should be emphasized instead is that using a mask is not the end of your responsibility towards protecting yourself and others. Other precautions are equally important. Following are a few examples:
1. If you have cough and/or fever, confine yourself indoors and avoid coming in contact with people, specially children, elderly and those with chronic illnesses.
2. Wash your hands well with soap and water frequently and certainly after touching anyone or anything.
3. Avoid touching your face and eyes unnecessarily.
4. Do not cough in the open or on your hands. Use a tissue or your sleeve instead. Bin the tissue immediately.
5. Avoid unnecessary travels.
6. Avoid public gatherings.
7. If you suspect you may be infected with Corona, do not use antibiotics, they will not be effective.
8. When interacting with strangers or those with cough/fever, stand at least three steps away.

Dr Vibhash Mishra, London, UK, Chief Medical Officer, Second Medic

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How Cold Weather Affects Health: Understanding Winter’s Impact on the Body

Seasonal changes influence human health more than most people realise. Cold weather, in particular, places unique stress on the body and can worsen existing health conditions while increasing susceptibility to new illnesses. Understanding how cold weather affects health is essential for preventing seasonal complications and maintaining wellbeing during winter months.

In India, winter-related health issues vary by region but commonly include respiratory infections, cardiovascular strain and joint discomfort. According to the Indian Council of Medical Research (ICMR) and World Health Organization (WHO), cold exposure is associated with increased morbidity, especially among older adults and people with chronic conditions.

Why Cold Weather Impacts the Body

The human body works constantly to maintain core temperature. In cold environments:

blood vessels constrict to conserve heat
energy expenditure increases
immune responses may weaken
organs work harder to maintain balance

These adaptations, while protective, also create health vulnerabilities.

Increased Risk of Infections

Weakened Immune Response

Cold weather can suppress immune function, making it harder for the body to fight infections.

Factors contributing to winter infections include:

reduced vitamin D due to less sunlight
dry air affecting mucosal defenses
closer indoor contact

Common winter infections include colds, flu and respiratory illnesses.

Respiratory Health Problems

Cold air irritates the respiratory tract.

This can lead to:

worsening asthma symptoms
bronchitis flare-ups
increased cough and breathlessness

WHO reports higher hospital admissions for respiratory illnesses during colder months.

Impact on Heart Health

Cold temperatures affect cardiovascular function.

Blood Vessel Constriction

Cold causes blood vessels to narrow, increasing:

blood pressure
heart workload

This raises the risk of:

heart attacks
strokes

People with existing heart disease are particularly vulnerable.

Joint and Muscle Pain

Cold weather affects musculoskeletal health.

Common complaints include:

joint stiffness
muscle aches
worsening arthritis pain

Lower temperatures reduce joint lubrication and increase sensitivity to pain.

Metabolic and Weight Changes

Winter often leads to:

reduced physical activity
increased calorie intake
metabolic slowdown

These changes contribute to weight gain and worsen metabolic conditions such as diabetes.

Skin and Hydration Issues

Cold air holds less moisture.

This leads to:

dry skin
cracked lips
worsening eczema

Dehydration is also common as thirst perception reduces in cold weather.

Mental Health Effects

Seasonal changes can influence mental wellbeing.

Cold weather is associated with:

low mood
reduced motivation
seasonal affective symptoms

Limited sunlight affects circadian rhythm and serotonin levels.

Cold Weather and Older Adults

Elderly individuals face higher risks due to:

reduced temperature regulation
weaker immunity
existing chronic conditions

Winter-related complications are a significant cause of hospitalisation in older populations.

Why Chronic Diseases Worsen in Winter

Conditions such as:

hypertension
arthritis
asthma
diabetes

often worsen due to reduced activity, stress on organs and infection risk.

Preventive Strategies for Winter Health

Maintain Body Warmth

Layered clothing and warm environments reduce cold stress.

Support Immunity

Adequate nutrition, vitamin intake and sleep strengthen immune defences.

Stay Physically Active

Indoor exercises and regular movement prevent stiffness and metabolic decline.

Manage Chronic Conditions

Regular monitoring and medication adherence are critical during winter.

Hydration and Skin Care

Drinking fluids and using moisturisers prevent dehydration and skin damage.

Role of Preventive Healthcare

Preventive healthcare helps:

identify seasonal risk factors
adjust treatment plans
prevent winter complications

NITI Aayog highlights seasonal preparedness as an important public health strategy.

When to Seek Medical Help

Medical attention is necessary if:

infections persist or worsen
chest pain or breathlessness occurs
joint pain limits mobility
mental health symptoms interfere with daily life

Early care prevents serious outcomes.

Long-Term Impact of Ignoring Winter Health Risks

Ignoring cold weather effects may lead to:

severe infections
cardiovascular events
chronic pain progression
reduced quality of life

Seasonal awareness plays a critical role in long-term health.

Conclusion

Understanding how cold weather affects health allows individuals to take timely preventive measures. Winter increases the risk of infections, heart strain, respiratory problems, joint pain and mental health challenges. With proper warmth, nutrition, activity and preventive healthcare, most cold-related health issues are manageable and preventable. Seasonal care is not optional—it is essential for protecting health and wellbeing throughout the colder months.

References

ICMR – Seasonal Health and Infectious Disease Reports
National Family Health Survey (NFHS-5) – Seasonal Morbidity Data
NITI Aayog – Preventive Healthcare and Seasonal Preparedness Strategy
WHO – Cold Weather and Health Impact Guideline
Lancet – Seasonal Variation in Cardiovascular and Respiratory Diseases
Statista – Winter Health Trends and Illness Data
Indian Journal of Public Health – Climate and Health Studies

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