Maybe they’re not so healthy after all:
One recent study found that antioxidant compounds caused fertility problems in mice. Though popular among athletes, antioxidants haven’t been shown to improve performance or speed recovery. To the contrary, supplementing with antioxidants may blunt the beneficial effects of working out. And while some dietary antioxidants may have a role in cancer prevention, excessive doses of some vitamins can aggravate illness or even cause it, researchers say. “People should be aware that there is little to no data supporting the use of antioxidants to protect against disease,” said cardiologist Toren Finkel, chief of the Center for Molecular Medicine at the National Heart, Lung, and Blood Institute.
The rest of the article is here.
The article, and the references it sites, is an indictment of anti-oxidant supplements and not so much the compounds themselves.
For me, the point that comes forward is the difference between supplementation and diet. A supplement, while containing many healthy things, is many steps removed from its natural sources. Often just as much as the processed junk food lots of pundits like to throw sticks at. This isn’t an anti-technology rant. I take supplements when I can. But it’s important to remember that natural produce typically goes bad after a few days, and it’s just about impossible to preserve food without making important trade-offs.