Helmut Sies
Helmut Sies is a German physician, biochemist and university professor. He was the first to demonstrate the existence of hydrogen peroxide as a normal attribute of aerobic life in 1970, and he introduced the concept of Oxidative stress in 1985. He also worked on the biological strategies of antioxidant defense and the biochemistry of nutritional antioxidants (e.g., selenium, carotenoids, flavonoids, polyphenols).
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