A new meta-analysis is challenging long-standing assumptions about vitamin D supplements. New research from researchers at ...

It has been linked to several serious health conditions.

Vitamin D is known to be essential to many aspects of human health — but a new study suggests that taking a certain form of it can have a negative effect. The more potent and longer-lasting form, ...

Vitamin D2 supplements may lower blood levels of vitamin D3, which the body uses more effectively. Vitamin D2 comes from plants, while D3 is usually animal-based, making D3 harder to access for people ...

Fresh research and updated guidelines suggest vitamin D supplementation may reduce disease risks in specific groups, including children, older adults, pregnant women, and some with prediabetes.

Share on Pinterest A new study compared the vitamin D boosting capacity of two forms of vitamin D: D2 and D3. Viktoriya Skorikova/Getty Images Vitamin D deficiency is associated with an increased risk ...