India, Dec. 25 -- Vitamin D deficiency is far more common than most people realize. Globally, more than 1 billion people are deficient in vitamin D, and nearly half the population has vitamin D levels that are lower than normal. While vitamin D is widely known for supporting bone strength, immunity, and overall health, many people do not absorb or use it properly. That is because vitamin D does not work alone. It needs magnesium to convert it into its active form inside the body. Without enough magnesium, vitamin D can remain inactive, even if you are taking supplements regularly. Together, these two nutrients support stronger bones and better muscle function.

Magnesium is a vital mineral involved in multiple biochemical reactions in the...