Vitamin A 10000 IU 100 gels by Douglas Labs

Vitamin A is essential for normal cellulardifferentiation. Its metabolite, retinoic acid, assumes a central role in gene activation and transcription. Asa result, vitamin A status has profound effects on all rapidly dividing tissues in the body, such as immunecells and intestinal cells, and affects fertility, fetal development and growth.

Cellular differentiation is crucial for normal immune response, and vitamin A deficiency can start a viciouscycle affecting the immune system. During vitamin A deficiency, immune function is impaired, whichputs the body at increased risk for infections. Acute infections further deplete the body of vitamin A,which leads to an even more impaired immune function and an even lower resistance to infections.While a few studies have found that vitamin A status in developed populations may be adequate, manystudies showed that marginal vitamin A deficiency is quite common. Women often have lower vitamin Alevels than men - who tend to consume more meats high in vitamin A. The elderly are also at increasedrisk for marginal vitamin A deficiency. Persons with HIV infection or AIDS often have low serum vitaminA and are at high risk for moderate to severe vitamin A deficiency.