Whey Protein: What It Actually Is, And Who Actually Needs It
The most popular supplement in every gym bag. Here's what it does, and whether you're actually one of the people who needs it.
Despite ample sunlight, indoor-heavy lifestyles, sunscreen use, higher melanin content (which reduces vitamin D synthesis efficiency), and cultural clothing patterns that limit skin exposure all contribute to widespread deficiency across Indian urban populations specifically.
Involved in immune function, muscle function, and mood regulation, alongside its more commonly known role in calcium absorption and bone density — deficiency has been linked to broader health effects than most people realize.
A simple blood test (25-hydroxyvitamin D) provides a clear answer rather than assuming deficiency or sufficiency based on symptoms alone, which can be vague and easily attributed to other causes.
Brief, regular sun exposure (10-15 minutes on exposed skin, avoiding peak intensity hours), and supplementation guided by a doctor based on actual blood levels, are the two main tools — food sources alone rarely provide enough to correct a significant deficiency.