Vitamin D also helps clear beta amyloid, a protein that plays a role in Alzheimer’s disease, Merrill points out. This is “the ...

Keep in mind that it’s important not to consume more than 4,000 IU of vitamin D without a doctor’s permission, as it exceeds the safe upper limits of intake and is not linked to additional ...

The same is true for vitamin D levels. Clinicians should not suggest high intakes of vitamin D (5,000 IU for example) before recommending the 25-OH vitamin D test. Health care professionals need ...

of what is safe to consume. People 9 and older, for example, may have a maximum 4,000 IU (100 mcg) of vitamin D per day.

"But the body is smart enough that it doesn't convert all that to vitamin A," Rosenbloom explains. If you're taking a multivitamin that contains 5,000 IU ... Vitamin D is found in some calcium ...

If you’ve discovered you have a deficiency in vitamin D, you’re not alone. It’s particularly common among: people who get limited sun exposure people with dark skin people over 65 years old ...

A recent study suggests that taking a vitamin D supplement could lower your risk for dementia as you age, especially for women. Here's what a doctor says.