And yes, taking too much, like more than 4,000 IU a day, can cause problems ... "Maybe you can clarify the Vitamin D debate ...

A recent study from Rutgers University looked at how vitamin D influences brain function in older adults. While many people ...

Thus, the recommended daily allowance of vitamin D will continue to be controversial ... below what the IOM considers the upper limit of 4000 IU/day. The Linus Pauling Institute at Oregon State ...

Is it possible to take too much vitamin D? And if so, how much is too much? We asked a nutritionist to explain all. Whether you want to support your immune system ahead of cold and flu season, are ...

But this isn't the whole story—our food choices aren't pulling their weight either, thanks in part to a limited list of foods that actually provide vitamin D in significant quantities.

"Do not take more than 100 micrograms (4,000 IU) of vitamin D a day as it could be harmful," the NHS says. Vitamin D is found in a small number of foods, including oily fish, red meat, liver ...

He said most individuals only require about 10 micrograms (400 international units) of vitamin D daily, while the maximum someone should take as a supplement is 100 micrograms (4,000 IU).

you should look for the concentration of vitamin D in each drop, expressed as 'international units' or short-form IU. People need about 600-800 IU on a daily basis. With a max of 4000 IU per day,” ...

The U.S. government's recommended daily amount of vitamin D is 400 international units, or IU, for infants up to 12 months, 600 IU for people ages 1 to 70 and 800 IU for people over 70.

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.

The recommended daily allowance of vitamin D varies by person. However, most adults should get 600 international units (IU) daily, while adults 70 and up should have 800 IU of the nutrient ...