Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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08.03.2009 |
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Soya-isoflavone supplement smoothes your skin
A supplement containing just a modest amount of isoflavones from soya reduces the number of wrinkles in the skin and also makes the skin more elastic, Japanese researchers at the Kikkoman Corporation, a soya sauce manufacturer, discovered.
Cosmetics manufacturers also add isoflavones to their products. This is because in test-tube studies isoflavones stimulate the development of skin cells, they reduce the breakdown of collagen and prevent fats in the skin from turning into aggressive compounds. The Japanese researchers wanted to know whether soya-isoflavones could reduce the formation of wrinkles in the skin. Japanese women are particularly concerned about wrinkles around the eyes, so that's what the researchers concentrated on.
The researchers found no effect on the large wrinkles around the eyes. But the number of small wrinkles in the corner of the eyes did decrease during the experiment. See the graph below. In the group that took the supplement, the wrinkled surface area decreased; in the placebo group the area increased.
It looks as though the supplement also improved the elasticity of the skin. The researchers measured this by pulling gently at the skin near the eyes and then seeing how quickly it returned to its original position.
That diet can help to slow down wrinkling is not a new discovery. Epidemiologists have published evidence that a diet rich in vegetables, olive oil and fish can delay the onset of wrinkles – compared to other diets. A diet rich in beans also seems to protect the skin. This is the first time that the effect of soya on wrinkles has been studied.
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