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American Journal of Clinical Nutrition, Vol 52, 500-501, Copyright © 1990 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Plasma concentrations of carotenoids after large doses of beta-carotene

MM Mathews-Roth
Department of Medicine, Harvard Medical School, Boston, MA 02115.

Plasma concentrations of beta-carotene were determined in healthy men ingesting 180 mg beta-carotene/d during studies on the effects of beta- carotene on sunburn prevention. This dose is also used in the treatment of light-sensitive skin diseases. beta-carotene concentrations were found to reach a plateau in 1.5 to 4 wk, although there was much individual variation in the actual serum concentrations achieved. Carotenodermia was present in most subjects. No evidence of toxicity was found, confirming the findings of previous photosensitivity- prevention studies, which also reported no significant toxicity attributable to beta-carotene.


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