I eat well, I exercise, I’m healthy… Many are surprised when their blood reports show low Vitamin D
levels. They often ask, “How is this possible when I take care of my health?”
Let me explain this in a simple way
This is one of the most common reactions I hear. And honestly, it makes sense. Vitamin D deficiency
feels like something that should happen only to people who are sick or weak. But today, even young,
fit, and health-conscious people are struggling with it.
Let’s talk about why.
We Rarely Get Real Sunlight
Most of us believe we get enough sun just by stepping outside. But the truth is, our daily
routine doesn’t really allow that.
• Vitamin D is mainly made in our body through sunlight. But today, most of us spend the
majority of our time indoors — offices, homes, gyms, and vehicles.
• Even if you step outside, it is often early morning or late evening when sunlight is weak.
Sunlight through windows or balconies does not help in Vitamin D production. For Vitamin D
synthesis, direct sunlight on bare skin is essential.
We Cover Ourselves Too Well
Sunscreen, full-sleeve clothes, scarves, umbrellas — all of these protect our skin, but they
also block Vitamin D production.
• While sunscreen and protective clothing are important for skin health, they also reduce the
skin’s ability to make Vitamin D.
• Many people stay well-covered whenever they are outdoors. This unintentionally reduces
Vitamin D production, even in those who spend time outside
City Living Makes It Worse
In cities, pollution and dust block the UVB rays needed for Vitamin D synthesis. This means
that even on sunny days, the body may not receive enough effective sunlight.
• This is a major reason why Vitamin D deficiency is common in urban populations.
Food Alone Is Not Enough
Unlike other nutrients, Vitamin D is present in very few foods.
Major dietary sources include egg yolk, fatty fish, liver, and fortified dairy products.
• Most Indian diets, especially vegetarian diets, are low in Vitamin D. So even a well-balanced,
home-cooked diet may not provide enough Vitamin D.
Healthy on the Outside, Struggling Inside
I often see people who consume Vitamin D but still remain deficient. This can happen due to:
• Gut health issues
• PCOD or thyroid disorders
• Obesity
• Poor fat absorption
Vitamin D is a fat-soluble vitamin, so any issue affecting fat digestion or metabolism can reduce its
absorption. So even after eating well or taking supplements, levels may stay low.
Skin Color Plays a Role
People with darker skin have higher melanin, which reduces the skin’s ability to synthesize
Vitamin D. This means more sun exposure is required to produce adequate Vitamin D.
• This is one of the reasons Vitamin D deficiencies is widespread in Indians, despite living in a
sunny climate.
Vitamin D Acts Like a Hormone
Vitamin D is not just important for bones. It plays a crucial role in:
• Immunity
• Muscle strength
• Mood regulation
• Hormonal balance
• Fertility and overall energy
Why Vitamin D Matters So Much
Low Vitamin D can show up as:
• Constant tiredness
• Body and back pain
• Hair fall
• Frequent infections
• Low mood or anxiety
All this can happen even when you feel you are living a healthy life.
Dietitian’s Takeaway(conclusion)
Dietitian’s Takeaway(conclusion)
Vitamin D deficiency does not mean you are unhealthy. It simply means your body is not getting or
using enough Vitamin D.
As a dietitian, I always recommend:
• Regular sunlight exposure
• Periodic blood testing
• Proper dietary planning
• Supplementation when required (under guidance)
True health is about balance — not just diet and exercise, but also awareness of what your body truly
needs.
