Vitamin D is mostly associated with strong bones. One of the 13 essential vitamins, it can help prevent bone diseases such as osteoporosis and maintain muscle function to reduce falls and fractures in ...

Medically reviewed by Soma Mandal, MD A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in ...

Especially in the cold season, when the temperatures drop and the days are shorter, the immune system is particularly challenged. If you strengthen ...