Why Vitamin D Deficiency Is Rising in India: And How to Fix It

Vitamin D deficiency has quietly grown into a serious public health issue in India, despite the country being blessed with abundant sunshine. Once considered a problem of colder, less sunny regions, India now faces an epidemic-scale crisis of low vitamin D levels that is affecting children, adults, and seniors alike. From weak bones and fragile immunity to fatigue and mood disorders, the deficiency is taking a toll on the nation’s health and productivity.

This blog explores the causes of vitamin D deficiency in India, the health benefits of vitamin D, the role of diet and supplementation, and, most importantly, how to fix vitamin D deficiency through practical nutrition and public health strategies.

Key Takeaways

• India’s vitamin D crisis is paradoxical, caused by indoor lifestyles, air pollution, cultural habits, and poor dietary sources.
• Vitamin D is essential for bone health, immunity, and overall well-being, but over 70–90% of Indians are deficient.
• Low vitamin D symptoms include bone pain, muscle weakness, frequent illness, fatigue, and, in children, growth issues.
• Vitamin D sources include sunlight, fatty fish, egg yolks, UV-exposed mushrooms, fortified dairy, and supplements.
• The best solutions involve a mix of food fortification, dietary diversification, awareness campaigns, and supplementation for high-risk groups.
• Nutritionists recommend increasing safe sun exposure, choosing vitamin D–rich foods, and adopting fortified options as part of the Indian diet.

The Science Behind Vitamin D and Its Health Benefits

Vitamin D, often called the “sunshine vitamin,” plays a unique role in the body because it is both a nutrient and a hormone. Unlike most vitamins, our skin can make it naturally when exposed to sunlight, specifically UV-B rays.

The health benefits of vitamin D go far beyond bone health. It:

• Helps absorb calcium and phosphorus for strong bones and teeth.
• Supports immunity, reducing the risk of frequent colds and infections.
• Plays a role in mood regulation, with studies linking low vitamin D to depression.
• Improves muscle strength and balance, especially important for seniors.
• May lower risks of chronic conditions like diabetes, cardiovascular disease, and certain cancers.

A 2018 study published in the Journal of Family Medicine and Primary Care estimated that 80–90% of India’s population is vitamin D-deficient, across both rural and urban regions. This makes it one of the most widespread but under-recognised health challenges in the country.

Causes of Vitamin D Deficiency in India

1. Indoor and Urban Lifestyles

Urbanisation has transformed how Indians live and work. Long hours in offices, schools, and homes mean reduced sun exposure. Add to that the growing popularity of gyms, malls, and indoor recreation, and the opportunities to get natural vitamin D from the sun have sharply declined.

2. Air Pollution and Sunlight Blocking

Cities like Delhi, Mumbai, and Bengaluru face severe air pollution. High levels of smog block UV-B rays, which are crucial for sunlight and vitamin D synthesis. Even if you step outdoors, the body often doesn’t receive the quality of sunlight needed for vitamin D production.

3. Skin Pigmentation and Sunscreen Use

Melanin, the pigment responsible for darker skin, reduces the skin’s ability to produce vitamin D. Since most Indians have medium to dark skin tones, they naturally need longer sun exposure than lighter-skinned individuals. The use of sunscreens, though important for skin protection, further reduces vitamin D synthesis.

4. Indian Diet and Nutrition Gaps

The Indian diet contributes significantly to the crisis. Vegetarian populations are at higher risk because natural vitamin D sources such as fatty fish, egg yolks, and liver are animal-based. Even among non-vegetarians, these foods are consumed infrequently or in small amounts.

Dairy, which could be a source, is rarely fortified in India. Compounding this is the high intake of cereals and pulses rich in phytates and phosphates, which interfere with calcium absorption, increasing the body’s vitamin D requirement.

5. Cultural Clothing and Lifestyle Practices

In many communities, cultural clothing that covers most of the body prevents skin exposure to sunlight. Combined with the indoor lifestyle, this further worsens the crisis.

Low Vitamin D Symptoms: Why Awareness Matters

One of the biggest challenges is that low vitamin D symptoms often go unnoticed or are mistaken for other issues. Common signs include:

• Fatigue and low energy
• Muscle aches and weakness
• Bone pain and frequent fractures
• Slow wound healing
• Frequent infections due to weakened immunity
• Mood swings or depressive symptoms

In children, vitamin D deficiency may cause rickets, a condition where bones become soft and bent. For seniors, it increases the risk of osteoporosis and falls.

India’s Vitamin D Crisis: A Public Health Challenge

The paradox of a sun-rich country struggling with vitamin D deficiency has been highlighted by multiple studies. According to research in the Indian Journal of Endocrinology and Metabolism, over 90% of certain urban populations tested deficient.

This isn’t just an individual health issue; it’s a public health challenge. Poor bone health affects productivity, frequent illnesses add to healthcare costs, and deficiencies in children can affect long-term growth and development.

The urgent question remains: How can we fix vitamin D deficiency in India?

How to Fix Vitamin D Deficiency: Practical Solutions

1. Food Fortification: The Most Practical Strategy

Experts agree that fortifying everyday foods is the most scalable and cost-effective solution. India already has successful models with iodised salt; the same can work for vitamin D.

• Fortify milk, curd, oils, butter, and infant formulas with vitamin D.
• Add vitamin D to staples like atta, maida, and rice flour.
• Ensure fortified foods are affordable and available via the Public Distribution System (PDS).
• Legislate and monitor fortification strictly to ensure compliance.

2. Dietary Diversification: Adding Vitamin D Sources

Non-Vegetarian Options:

• Fatty fish (salmon, mackerel, sardines): Richest natural source of vitamin D3.
• Egg yolks: Provide moderate amounts, shown to raise vitamin D levels in trials.
• Liver (chicken/beef): Contributes meaningfully in non-vegetarian diets.

Vegetarian Options:

• UV-exposed mushrooms: The Only plant-based source of vitamin D2. Studies confirm their effectiveness in raising serum vitamin D.
• Dairy (milk, paneer, curd): Small amounts, but valuable when consumed regularly.
• Calcium synergy foods (ragi, sesame, leafy greens): Though not vitamin D sources, they support absorption and bone mineralisation.

3. Supplementation Programs

For high-risk groups, children, pregnant women, lactating mothers, and seniors, vitamin D supplements are essential. Good-quality supplements should be made available at Primary Health Centres (PHCs) at a low cost.

The Indian Council of Medical Research (ICMR) may also need to update its Recommended Dietary Allowance (RDA) for vitamin D in line with global standards.

4. Awareness and Education

Lack of awareness is a huge barrier. Public health campaigns, school programs, and workplace wellness initiatives can:

• Encourage safe sun exposure for at least 20–30 minutes daily.
• Provide fortified meals in mid-day school programs.
• Train healthcare professionals to identify deficiency symptoms early.

Sunlight and Vitamin D: Balancing Safety and Health

Sunlight remains the most natural and cost-free source of vitamin D. However, Indians need to strike a balance:

• Best time: 10 am to 3 pm, when UV-B rays are strongest.
• Duration: Around 20–30 minutes of sun exposure to arms, legs, or face at least 3 times a week.
• Precaution: Avoid overexposure that can lead to tanning or skin damage.

For urban residents, making small lifestyle shifts, like morning walks, outdoor yoga, or short breaks under the sun, can make a big difference.

Nutritionist’s POV: Riya Mehta, FITPASS

Vitamin D deficiency is alarmingly widespread in India despite abundant sunlight, driven by indoor lifestyles, air pollution, cultural clothing, and poor dietary intake. As a dietician, I view this as both a nutritional and lifestyle issue. The most effective solution lies in fortifying commonly consumed foods such as milk, oils, cereals, and dairy products, alongside promoting vitamin D–rich options like fish, egg yolk, fortified mushrooms, and calcium-rich foods to support absorption. Beyond diet, awareness of safe sun exposure, school-based programs, and workplace wellness initiatives can help improve natural synthesis. High-risk groups, including children, women, and the elderly, should receive timely supplementation. A combined effort of nutrition, education, and public health policy is essential to reverse this rising deficiency.

Personal Experience: A Testimonial

“I always felt tired, had frequent back pain, and even minor workouts left me sore. When I finally got tested, my vitamin D levels were shockingly low. My doctor prescribed supplements and advised me to spend more time outdoors. I also added eggs, mushrooms, and fortified milk to my diet. Within months, I noticed a big change, better energy, improved mood, and no more aches. It made me realise how small changes can have such a big impact.”

FITFEAST: Helping You Eat Smarter

Fixing vitamin D deficiency is not just about sunlight; it’s also about choosing the right foods every day. With platforms like FITFEAST, you can access expert nutritional guidance and meal planning to include vitamin D–rich foods in your Indian diet. Small, smart adjustments go a long way in improving health.

Conclusion 

The Indian vitamin D crisis is a silent epidemic fuelled by lifestyle changes, dietary gaps, and lack of awareness. But it is also a solvable problem. By combining food fortification, dietary diversification, supplements, safe sun exposure, and public health strategies, India can reverse this trend.

Vitamin D is not just a nutrient; it’s a foundation for strong bones, robust immunity, and overall health. With collective efforts from individuals, families, and policymakers, India can move towards a healthier, stronger future.