Vitamin A is an elementary building block of the light-sensitive visual pigment rhodopsin in the rods of the retina. The visual pigment is needed to distinguish light from dark.
Retinol is a fat-soluble form of vitamin A and a particularly cell-communicating ingredient. It can attach itself to every skin cell and stimulate it to work. Retinol protects the cells from free radicals and external influences.
Many people wonder whether side effects can occur when taking vitamin A. If the human organism absorbs a little too much vitamin A, the excess can be excreted again through the urine. The body only uses the amounts it really needs.
Many people wonder how much vitamin A is contained in carrots. In plant foods is the precursor of vitamin A. It is also called beta-carotene. Per 100 grams of carrots are about 1637 μg beta-carotene.
A vitamin A deficiency can usually be easily controlled. Anyone who wants to eliminate a vitamin A deficiency quickly and effectively is often advised to take a dietary supplement. There are several forms of intake.