A new review of studies finds that the type of vitamin D that you take matters. The study looked at vitamin D3 vs. vitamin D2 ...

The first thing you could do to find out if you’re vitamin D deficient is try an at-home blood test – they’re readily ...

Vitamin D is one of the most commonly supplemented vitamins—especially in regions and during seasons with little sunlight. It ...

Each day I look forward to receiving emails from readers and they usually fall into roughly three categories: kind words regarding a column; a question that may address a recent topic, or it could be ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The supplement aisle can be chaotic — an endless wall of brands and formulations to supposedly support ...

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

Vitamin D is an essential nutrient in the human body and plays a major role in maintaining cognitive function, immune health and bone health. Even if you are not vitamin D-deficient, you may not be ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When you decide to spend money on a vitamin or supplement, you want to be sure it delivers. Which is why ...

Though it’s rare, a severe vitamin D deficiency can lead to a disease called rickets, also known as osteomalacia. Typically, ...

A new study reveals that taking vitamin D2 supplements might surprisingly lower your body's crucial vitamin D3 levels, essential for immunity and bone health. Researchers suggest D3, derived from ...