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Since experimental evidence has suggested that antioxidants consumed orally, such as beta carotene, can reduce signs of sun-related skin damage, the study also looked at whether a daily 30-milligram beta carotene supplement could protect against skin aging.
WSJ: Sunscreen Each Day Stops Wrinkles
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The latest part of the study, which involved about 4, 000 participants, also looked at the effect of replacing beta-carotene in the supplements formulation with lutein and zeaxanthin because of studies that found former smokers who take beta-carotene have a higher incidence of lung cancer.
WSJ: The Crucial Years for Protecting Your Eye Health
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They stayed alive on sweet potatoes, a rich source of calories, vitamin A and beta carotene.
FORBES: Millions Served