• Published on: Apr 04, 2020
  • 2 minute read
  • By: Raj Dwivedi

Protect Yourself From COVID-19 (novel Coronavirus)?

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COVID-19 is a viral disease that is spread by airborne droplets, similar to other viral diseases such as the common cold. Symptoms include respiratory issues such as coughing and sneezing, and for this reason many people look towards masks to prevent the spread of this disease. Whilst masks have their place in the treatment and management of respiratory illnesses in the healthcare setting, for the general public masks are of little use. Most members of the public use simple surgical masks, and these are not as effective as the approved N95 particulate respirators used by healthcare professionals.

THE PROBLEM WITH MASKS

Simple face-masks help prevent large droplets and particles from teaching your mouth and nose, particles that may contain viruses and bacteria. In surgery they prevent bodily fluids from being transmitted between patient and surgeon, such as blood. However their design does not block the very small particles that are transmitted by coughs and sneezes. Furthermore they are loose fitting and so particulates can still enter through the gaps between the mask and the skin.

N95 respirators on the other hand are specially designed to prevent very fine particulate matter from entering the users nose and mouth. However even these are not perfect as they are only rated to block 95% of all such matter. Their use also depends on having a tight seal around the face, and cannot be used with facial hair. Application of the mask must also be done in a particular manner without touching the mask to ensure it remains sterile. It needs to be replaced as soon as it is damp, and by only touching the straps behind your head. Before and after putting on the mask your hands should be cleaned with alcohol based gels, or with soap and water.

Because of the issues associated with masks, the WHO has released recommendations on when members of the public should use masks:

· If you are healthy, you only need to wear a mask if you are taking care of a person with suspected 2019-nCoV infection.

· Wear a mask if you are coughing or sneezing.

· Masks are effective only when used in combination with frequent hand-cleaning with alcohol-based hand rub or soap and water.

THE IMPORTANCE OF HYGEINE

So if masks are not effective, what should you do? The simple answer is you should maintain good personal hygiene to minimise the risk of infection. Simple, frequent hand-washing with soap and water or with alcohol gel physically destroys the virus on your hands. This minimises any transmission risk to yourself and to other people. If sneezing, you should sneeze into the crook of your elbow or into a tissue, and dispose of this. After this you should once again clean your hands and dry them thoroughly. Washing your hands for 20 seconds is more effective at reducing the risk of infection than wearing a mask.

Antibiotics will not help in treating COVID-19 as this is a viral disease. Antibiotics have no effect on viruses because they are completely separate types of organisms, as different as a human is to a potato. Other drastic measures such as irradiating your body or using highly irritant cleaning products on the skin such as bleach can cause harm and create further medical problems. Using traditional or homemade medical therapies advocated on social media or by word-of-mouth are similarly not effective in destroying the virus. Some treatments can be harmful to your body as they are untested with no evidence to show they work, and unfortunately can provide you with a false sense of security. If you wish to obtain advice you should do so from a qualified health professional or from the World Health Organisation site on public advice. This can be found on https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public COVID-19.

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

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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