Medically reviewed by Sohaib Imtiaz, MD Key Takeaways Vitamin D is essential, but getting too much, especially from supplements, can have serious side effects.Too much vitamin D can cause dangerously ...

Too much vitamin D raises calcium absorption, which can lead to hypercalcemia, where calcium forms dangerous deposits in ...

Sherri Gordon, CLC is a certified professional life coach, author, and journalist covering health and wellness, social issues, parenting, and mental health. She also has a certificate of completion ...

Vitamin D plays a crucial role in bone health. FotoHelin/ Shutterstock 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 ...

The "sunshine vitamin" may come with a dark side. Just as a lack of vitamin D can lead to health dangers, so too can an excess. For years now, scientists have warned that not everyone needs to take ...