... that populate the system. These include vitamin A, beta-carotene, vitamin C, vitamin E, the minerals zinc & selenium, ...

... by the body into retinol. The conversion of beta-carotene into retinol occurs mainly in the intestinal mucosa. ... used only under medical supervision. Excess amounts of beta-carotene are stored in body fat deposits. Excessive intake ...

... vegetables seem to have no vitamin A activity. Beta-carotene-containing foods have been extensively studied in cancer epidemiology (Peto et al. 1981). Although beta-carotene is most efficiently converted (Linder 1985), it still ...

... Bowen PE, Anderson B, et al. Effects of beta-carotene repletion on beta-carotene absorption, lipid peroxidation, and neutrophil superoxide formation in ...

... 000 I* D* vitamin A (7*2 mg* beta-carotene) per 100 gm* has been selected for the ... variously in terms of "carotene", "crude carotene", and "beta- carotene*" Recent work has shewn that "crude carotene" con- ...

... to determine whether antioxidants (vitamins C, E, and beta-carotene) and zinc would prevent the development or retard ... quenching of singlet oxygen by vitamin E and beta-carotene, and continue as these and other antioxidants combat ...

... A or 40 I.U. (24 micrograms) of beta-carotene (one I.U. equals 0.6 micrograms of beta-carotene) per kilogram of body weight per day is ... vitamin A, or 2,600 1.U. of beta-carotene per man per day. From their studies Hume ...

... per day. Since the Lutein preparation contained 1% beta- carotene the effect of pure beta-carotene on cone and rod adaptation was ascertained. The ... effect was distinct from that due to the beta-carotene present." 13U* Vision in Air Sea Rescue Search £• S. ...

... Biomarkers Prev 1996:5:567-75. Garewal HS. Beta-carotene and vitamin E in oral cancer prevention. J ... D, Steinbronn K. Response of oral leukoplakia to beta- carotene. J Clin Oncol 1990 Oct;8(10):1715- ...

... inversely with consumption of preformed vitamin A or beta-carotene, its precursor (Peto et al. 1981; National Academy ... malignancy, and from possible an- ticarcinogenic activity of beta-carotene. the principal dietary precursor of vitamin A (Peto ...