Parietal Cells: Gastric cells responsible for the secretion of hydrochloric acid and intrinsic factor. Intrinsic Factor: A glycoprotein essential for vitamin B12 absorption; its deficiency leads ...

Women who might become pregnant should be especially cautious with vitamin A supplements or avoid them entirely .

A serious deficiency is much more common in countries with tough socioeconomic conditions and limited access to vitamin A-rich foods. Who Is at Risk for Vitamin A Deficiency?

From kale to carrots here’s what your body really needs – and why you might want to rethink your relationship with liver.

For example, 3,000 IU of vitamin A (as retinol) is 900 mcg RAE. About 18,000 IU beta carotene, which is less potent than ...

Dull strands, flaky scalp, or sudden shedding? Experts break down how vitamin A affects hair health, how much you really need ...

Lower levels of certain vitamins and minerals were found to be associated with chronic pain in a study led by researchers at ...

Vitamin D is not only an essential nutrient, but also the precursor of the hormone calcitriol, indispensable for health. It ...

"The most common sign of a vitamin D deficiency would be aches in the muscles and bones," points out Dr Claire Gorman, consultant rheumatologist at Nuffield Health.

Though vitamin A deficiency is relatively uncommon in the U.S., most prenatal supplements contain vitamin A to support optimal vitamin A levels.

By flipping an evolutionarily disabled genetic switch involved in vitamin A metabolism, researchers headed by a team at the National Institute of Biological Sciences, Beijing, have enabled ear ...