NEW YORK (Reuters Health) - A daily dietary supplement of calcium plus vitamin D taken for 7 years neither reduces blood pressure nor alters the risk of developing high blood pressure, also called ...

A widely anticipated study has concluded that neither vitamin D nor fish oil supplements prevent cancer or serious heart-related problems in healthy older people, according to research presented ...

When the summer sun fades and the days get shorter, you might notice yourself feeling a little more tired, melancholic, or even catching colds. This happens to millions of us every year, and it’s ...

Many people start taking vitamin D pills without testing them, as if they will magically improve their health. However, the reality is that the need for vitamin D varies from person to person. Vitamin ...

The body makes vitamin D when it is exposed to the sun, and we also ingest it. But vitamin D is important and there is a lot to know about it. 1. I think that everyone should be taking vitamin D. I ...

The NIH Office of Dietary Supplements published a fact sheet in March 2025 reviewing the evidence behind vitamins C, D, and A ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

Dear Doctor K: I’ve read several articles about the negative effects of a low blood level of vitamin D, but my doctor said I didn’t need to have my level checked. Why not? Dear Reader: Many of my ...

The findings of the trial, called VITAL, were complex. When researchers looked at cancer and overall cardiovascular events, they found no protective benefit from taking vitamin D or fish oil ...

A major study finds taking calcium or Vitamin D pills does not help prevent growths that can lead to colon cancer in people who have had at least one in the past. It's the latest setback among many ...

Some two-thirds of Americans don’t get enough bone-strengthening vitamin D. That’s especially true during the cold and dark winter months when people are deprived of the vitamin D provided by the ...