Vitamin D2 supplements may negatively impact circulating levels of vitamin D3 and negate the latter's potential benefits, ...

That’s because our body doesn’t make enough of the stuff in the darker months as sunlight decreases. Vitamin D is key to ...

Researchers analyzed 11 trials with 655 adults and discovered that taking vitamin D2 supplements decreases the body's vitamin ...

Taking vitamin D2 may lower vitamin D3 levels, suggesting the two forms aren’t interchangeable. Vitamin D3 appears more ...

“However, we discovered that vitamin D2 supplements can actually decrease levels of vitamin D3 in the body, which is a previously unknown effect of taking these supplements. This study suggests that ...

You may have heard that everyone should take a vitamin D supplement. But what’s the science behind that? And are some brands ...

While the recommended daily intake of vitamin D is 600 international units (IU) a day, you may need to take up to 3000 IU ...

Since vitamin D accumulates in the body, taking a high-dose supplement may lead to vitamin D toxicity. This causes nausea, vomiting, and weakness.

Vitamin D deficiency often sneaks up on people, even those who are careful about what they eat and always trying to make ...

Milk is another drink that is often fortified with vitamin D to help us get this valuable nutrient. Like orange juice, milk is not a natural source of vitamin D, but the FDA allows manufacturers to ...

Routine data from laboratories reveal a decline in vitamin D levels during the COVID-19 pandemic, especially in older women ...

We spoke with an expert to learn which 5 common foods might interfere with vitamin D absorption and what the mechanism behind ...