Vitamin D is one of the most widely used dietary supplements in the world, but many people are unsure about the best time of ...

When the days shorten and the sun sinks low in the sky, that familiar winter slump sets in. There's a fundamental reason for this seasonal fatigue: low levels of vitamin D—the "sunshine vitamin." ...

Despite living in an age of abundant food options and supplements, certain vitamin and mineral deficiencies remain surprisingly common – and vitamin D is among the most widespread. Research suggests ...

Medically reviewed by Lindsay Cook, PharmD Vitamin D helps improve calcium absorption, while vitamin K2 ensures that calcium is deposited in the bones rather than in surrounding tissues.  Taking ...

Is it safe to take a multivitamin daily for years? Here's what happens with long-term use, including potential benefits, risks, and how to choose the right one.

Julia Ries Wexler is a writer focusing on all things health and wellness. She has over 10 years of experience in health journalism, and though she has written about pretty much every health topic ...