Search results
Results from the WOW.Com Content Network
“Vitamin D is essential for brain and bone health, and many people are deficient due to limited sun exposure,” says Dr. McQuiston. “Checking your levels with your doctor is a good first step.”
Vitamin D toxicity, or hypervitaminosis D, is the toxic state of an excess of vitamin D. The normal range for blood concentration of 25-hydroxyvitamin D in adults is 20 to 50 nanograms per milliliter (ng/mL).
The researchers discovered that people who took vitamin D had a 40% lower risk of developing dementia than those who didn’t take a supplement. They also had a 15% higher five-year survival rate.
Specific medical names of the different conditions are derived from the given vitamin involved: an excess of vitamin A, for example, is called hypervitaminosis A. Hypervitaminoses are primarily caused by fat-soluble vitamins ( D and A ), as these are stored by the body for longer than the water-soluble vitamins.
In women, vitamin D receptors are expressed in the superficial layers of the urogenital organs. There is an association between vitamin D deficiency and a decline in sexual functions, including sexual desire, orgasm, and satisfaction in women, with symptom severity correlated with vitamin D serum concentration.
Vitamin A deficiency is rare in the United States, where most people get enough from food sources. Adults shouldn’t have more than 3,000 mcg per day; if excessive vitamin A builds up in the ...
These two forms of vitamin D are metabolized in the liver and stored as 25-hydroxyvitamin D. [4] Before biological use, the storage form must be converted into an active form. One common active form is 1,25-dihydroxyvitamin D. [4] The term vitamin D in this article means cholecalciferol, ergocalciferol, 25-hydroxyvitamin D, and the active forms ...
A U.K. coroner is pushing the country’s Food Standards Agency to upgrade its labeling of certain dietary supplements, after a man died in part from vitamin D toxicity, or hypervitaminosis D.