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Supplements Rise in Effective Sun Care
Posted: June 16, 2008
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Kopcke and Krutmann searched for studies on beta-carotene supplementation studies for protecting humans against sunburn. Seven studies were identified that tested the effectiveness of the carotenoid.
The article in the journal Photochemistry and Photobiology concluded that 10 weeks of supplementation would provide noticeable protection against sunburn, while every additional month of supplementation improved the protection level further.
Speculation over antioxidant activity
The researchers said the exact mechanism or mechanisms behind beta-carotenoid's sun protection were unknown, but stressed that it was tempting to speculate that the carotenoid's antioxidant activity may be responsible.
On exposure to UV radiation, particularly UV-B, reactive oxygen species (ROS) are produced in the skin that may result in oxidative stress, a known accelerator of the ageing process. Beta-carotene may quench these ROS and thereby offer skin protection.