Beta-carotene

=Generalities= Beta-carotene is also called pro-vitamin A. The risk of toxicity is non-existent for beta-carotene while there is a risk for Vitamin A.

=Properties and Mode of Action= The amount of Vitamin A that results from the conversion of beta-carotene is inversely proportional to its intake. In other words, the more one consumes beta-carotene, the less one produces Vitamin A -Precursor of Vitamin A -Prevents the preoxidation of lipids (as does Vitamin E) -Prevents mascular degeneration and cataracts

=Indications= -Erythropoietic Protoporphyria -Skin and eye photosensitivity -Prevention of macular degeneration and cataracts -Slowing of arthrosis progression -Prevention of stomach and breast cancer

=Contraindications= None Known

=Precautions= When more than 300mg. is consumed longterm, beta-carotene can lead to caotenodermia, or a yellowing of the skin similar to what occurs with jaundice.

=Food Sources= -Orange, yellow or red vegetables -Orange fruit

=Therapeutic Dose= 15-60mg./day or 25,000 to 100,000 IU/day