Vitamin D is often called the “sunshine vitamin”, but many adults still do not get enough of it. That is true even in sunny countries such as India, where long indoor work hours, air pollution, covered clothing, darker skin tone, sunscreen use, and ageing can all reduce vitamin D made through the skin. This matters because vitamin D is not just about bones. It helps the body absorb calcium, supports muscle function, plays a role in immune health, and helps maintain normal blo