‌Vitamins are important to your body’s health. The vitamins in your food, that you absorb from your environment, or get from supplements all work together. However, too much of certain ...

For adults, a level of vitamin D in the blood of 20 nanograms per milliliter (ng/mL) or above is generally considered adequate. Levels below 20 ng/mL are generally too low for adequate bone health ...

Vitamin D is critical for good health, and is well known to play a role in good bone health and a healthy immune system. The nutrient is also crucial to your body's ability to manage the hormone ...