Most vitamin D sold to consumers is vitamin D3, and there are two primary forms of vitamin D available for use in dietary supplements: cholecalciferol (vitamin D3) and ergocalciferol (vitamin D2).

Their existence — and the fact the level varies between people — could explain why some may feel a bit under the weather post-jab and others report zero side effects. RMIT Research Fellow Dr ...

A vitamin D deficiency at that stage of life causes the thymus to age more quickly, the researchers discovered. The study is published in the journal Science Advances .

A new study reinforces the importance of vitamin D to health, especially as the onset of winter diminishes sunlight, the most effective way humans absorb the vitamin. The study, published in the ...

Vaccine side effects like soreness, fever, and fatigue scare some people out of getting their shots. Ask a doctor, though, and they’ll tell you these unpleasant symptoms have a silver lining ...