Vitamin D supplements are generally in your system after 4 to 12 weeks. Learn more about the importance of consistent supplementation to sustain results.

A new study found that vitamin D supplementation improved a key marker of biological aging—but it's probably too soon to rush to the drugstore. Here's what to know.

Too much vitamin D, or vitamin D toxicity, happens due to a buildup of calcium in the blood (hypercalcemia), which can be ...

Ascorbate biosynthesis : a diversity of pathways / N. Smirnoff, J.A. Running and S. Gatzek -- Ascorbic acid catabolism : breakdown pathways in animals and plants / F.A. Loewus -- The biotechnology of ...

Vitamin supplement absorption depends on many factors, including supplement formulation, your diet, health conditions, and pill coatings that may affect dissolution. Your body can store fat-soluble ...