Just in time for the london olympics, we have new research on those sports drinks that are turning up all over the games and the advertising. The drink makers spend billions of dollars a year... See More
Just in time for the london olympics, we have new research on those sports drinks that are turning up all over the games and the advertising. The drink makers spend billions of dollars a year promoting their products for the more casual aathlete. But much difference do they make if you're not training at olympic levels? Reporter: It's the official linebacker sports drink, aggressive product replacement, puts coca-cola's powerade in the hands of big stars from michael phelps to nba olympian chris bosh. It's an essential part of my game. Reporter: Science -- 40 years of hydration in every bottle. Reporter: But just as the olympic games began in london, a reality check from a group of researches from england's prestigious oxford university. They used a lot of industry-sponsored scientists to do the research which makes us suspicious to begin with. Reporter: In fact, the mds is say they couldn't find evidence backed for much of the and much is flawed science. We found much of the science is not done well. Reporter: Many know they're critical of sports drinks because they have little benefit for casual athletes who work out less than two hours a day and most contain sugar. Sports drinks are grossly oversold by companies who make them. People all over the place, teenagers drinking these things. The. Reporter: The scientists tell abc news the oxford city year looks science that moves it provided cash hydrate energy and hydration which is essential for health. Karin dolan at columbia university has accepted speaking fees from gatorade. Does that disqualify the research? I don't believe it does. It says we're also going to get funding from. You're not going to get large mih brands to study sports nutrition drinks. Reporter: What's good for the olympians is not necessarily good for the rest of us, especially children. Jim avila. Abc news, washington.
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