As a rule, younger people need less vitamin D than older people, regardless of sex. This article explains average vitamin D ...

Several months ago, my doctor recommended I start taking 1,000 IU of vitamin D3 daily to support bone health. She also said research shows vitamin D may even help prevent breast cancer. I was like, ...

Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of vitamin D in a teaspoonful of cod liver oil. However, 800 to 1,000 IU is ...

Most vitamin D3 supplements available over-the-counter are sold in dosages between 1000–5000 IU, but some are higher ...

That's why food companies often "fortify" milk, yogurt, baby formula, juice, cereal, and other foods with added vitamin D. To get enough vitamin D, some kids might need to take a multivitamin with ...

Long-term daily supplementation with moderate (1600 international units [IU]) or high (3200 IU) doses of vitamin D3 doesn’t reduce the risk for type 2 diabetes (T2D) among generally healthy ...