Medically reviewed by Soma Mandal, MD A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in ...

Peeing more than usual and feeling more thirsty are symptoms of too much vitamin D. Learn why overdosing on vitamin D is ...

Learn about the best time of day and way to take vitamin D and if you should consider a supplementing with this nutrient.

Over the past few decades, the "normal" blood level of vitamin D (25-OH vitamin D) was based on the amount needed to keep PTH from becoming abnormally high. Again, PTH at high levels can cause ...

Here are the factors that may determine your risk: If you have these signs and suspect they're linked to a vitamin D ...

and fasting blood glucose. Some groups did even better, such as those with vitamin D deficiency or lower BMI. Experts say it’s a good idea to get tested by a doctor before taking larger doses.

Specifically, vitamin D offers "overall beneficial effects on blood pressure, blood lipid levels and glycemic parameters." This was especially the case in non-Westerners, participants with lower ...

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 ...

people with lower levels of circulating vitamin D in their blood, people with a BMI of under 30, and people ages 50 and older. The study is published in the journal Engineering. Simin Liu ...