
Oral supplements of beta-carotene may protect against sunburn, and the longer the supplementation period the greater the protection, says a new meta-analysis.
Ten weeks of supplementation were required to produce a protective effect, according to pooled data from seven studies reported in the journal Photochemistry and Photobiology.
"This meta-analysis indicates that beta-carotene supplementation of humans is effective in providing protection against the development of a sunburn reaction,"
"This observation emphasizes that systemic photoprotection by beta-carotene is quite different from that achieved with a topically applied sunscreen,"
There is a growing body of science focusing on the potential benefits of nutrients to boost skin health from within, with lutein, lycopene and superoxide dismutase (SOD) having been reported to improve skin health.
Moreover, for every additional month of supplementation, the degree of protection increased, added Kopcke and Krutmann.
"This observation emphasizes that systemic photoprotection by beta-carotene is quite different from that achieved with a topically applied sunscreen," they said. "Whereas proper use of modern sunscreens provides protection against the development of a sunburn reaction within minutes after topical application, beta-carotene-induced photoprotection builds only slowly over several weeks of supplementation."
Responsibly, they stressed that the carotenoid was not a replacement for sunscreen, particularly under strong sun exposure, but may work in addition to topicals. Beta-carotene's sun protection factor (SPF) was "at best" about four, they said.
Mechanism
The researchers said the exact mechanism or mechanisms behind beta-carotenoid's sun protection were unknown, but said 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.
SCOTT'S COMMENTS
No surprise here, antioxidants protect against oxidative damage! So eat lots of vegetables and take a good multivitamin. Animal paks, GNC's Mega Men, and Multi Maxx by Maxx Essentials are my favs. Oh and stay out of the sun! Ya, like any of us are going to listen to that advice!


























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