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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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Role of Nutrition in Disease Prevention: How Food Choices Shape Long-Term Health

Disease prevention is no longer limited to vaccinations and medical screenings. Modern healthcare increasingly recognises nutrition as one of the most powerful tools for preventing illness before it begins. The role of nutrition in disease prevention is especially important in India, where lifestyle-related diseases account for a large share of premature illness and mortality.

According to the Indian Council of Medical Research (ICMR) and the National Family Health Survey (NFHS-5), poor dietary patterns contribute significantly to rising cases of diabetes, heart disease, obesity and hypertension. Unlike genetic factors, nutrition is a modifiable risk factor, meaning everyday food choices can actively protect health.

Why Nutrition Is Central to Disease Prevention

1. Nutrition regulates metabolic health

Balanced diets help maintain:

healthy blood sugar levels
optimal cholesterol balance
stable blood pressure

Disruption in these systems increases disease risk.

2. Nutrition strengthens immunity

WHO highlights that immune function depends heavily on adequate intake of vitamins, minerals and protein.

3. Nutrition controls inflammation

Chronic low-grade inflammation is linked to most lifestyle diseases. Diets rich in whole foods reduce inflammatory markers.

Major Diseases Influenced by Nutrition

Diabetes and Prediabetes

Excess refined carbohydrates and sugar drive insulin resistance.

Preventive nutrition focuses on:

whole grains
fibre-rich vegetables
adequate protein
controlled portion sizes

ICMR data shows that dietary modification can delay or prevent type 2 diabetes in high-risk individuals.

Cardiovascular Disease

Heart disease remains a leading cause of death in India.

Nutrition impacts:

cholesterol levels
blood pressure
arterial inflammation

Diets low in trans fats and high in fibre significantly reduce cardiovascular risk, as confirmed by WHO and Lancet studies.

Obesity

Obesity increases the risk of multiple chronic diseases.

Preventive nutrition addresses:

calorie density
food quality
satiety regulation

NFHS-5 reports a steady rise in overweight and obesity across age groups.

Hypertension

High sodium intake and low potassium intake contribute to high blood pressure.

Preventive dietary strategies include:

reducing processed foods
increasing fruits and vegetables
maintaining mineral balance

Certain Cancers

Diet influences cancer risk through:

antioxidant intake
fibre consumption
reduced exposure to carcinogenic compounds

WHO estimates that a significant percentage of cancers are preventable through diet and lifestyle changes.

Key Nutrients That Support Disease Prevention

Fibre

Supports gut health, blood sugar control and cholesterol reduction.

Protein

Essential for muscle health, immune function and metabolic balance.

Healthy Fats

Omega-3 fats reduce inflammation and protect heart health.

Micronutrients

Iron, zinc, vitamin D and B vitamins are essential for metabolic and immune regulation.

NFHS-5 highlights widespread micronutrient deficiencies in India, increasing disease vulnerability.

Role of Gut Health in Prevention

The gut microbiome plays a major role in:

immune regulation
inflammation control
nutrient absorption

Fermented foods and fibre-rich diets support healthy gut bacteria, strengthening disease resistance.

Why Preventive Nutrition Works Best Early

Nutrition is most effective when applied:

before disease onset
during pre-disease stages
alongside regular health screening

Once disease progresses, nutrition remains supportive but may not reverse damage fully.

Nutrition vs Medication in Prevention

Medication treats disease; nutrition reduces risk.

WHO and NITI Aayog emphasize that:

preventive nutrition reduces disease incidence
lifestyle modification lowers healthcare burden
early nutrition changes reduce dependency on long-term medication

Both approaches work best when combined appropriately.

Workplace and Community Role in Preventive Nutrition

Structured nutrition programs at workplaces and communities:

improve awareness
support behaviour change
reduce population-level disease burden

Lancet studies show that group-based nutrition interventions improve long-term adherence.

Common Myths About Nutrition and Disease Prevention

Myth 1: Supplements replace healthy food

Whole foods provide better long-term protection.

Myth 2: Prevention requires extreme diets

Consistency matters more than restriction.

Myth 3: Nutrition only matters after diagnosis

Early nutrition is most effective before disease develops.

Building a Preventive Nutrition Routine

Effective preventive nutrition includes:

regular meals
diverse food groups
portion awareness
minimal processed foods
hydration

Small daily choices compound into long-term health benefits.

Long-Term Impact of Preventive Nutrition

Consistent healthy eating leads to:

reduced disease risk
improved energy and productivity
better immune resilience
lower healthcare costs
improved quality of life

NITI Aayog identifies nutrition as a cornerstone of sustainable healthcare systems.

Conclusion

Understanding the role of nutrition in disease prevention empowers individuals to take control of their health long before illness develops. Balanced, consistent nutrition reduces inflammation, supports immunity and protects against chronic diseases that burden India’s healthcare system. Preventive nutrition is not about short-term fixes but about building lifelong habits that support health, resilience and longevity.

References

ICMR – Nutrition and Lifestyle Disease Prevention Reports
National Family Health Survey (NFHS-5) – Dietary and Metabolic Health Data
NITI Aayog – Preventive Healthcare and Nutrition Strategy Reports
WHO – Diet, Nutrition and Chronic Disease Prevention Guidelines
Lancet – Nutrition and Disease Risk Reduction Studies
Statista – Dietary Trends and Health Outcomes India
EY-FICCI – Preventive Healthcare and Nutrition Economics

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