Protein drinks are being advertised as a way to boost fitness, and that marketing targets everyone from body builders to teenagers.
But, according to a new study, over-consuming some of those products could be dangerous.
"Early Show" Consumer Correspondent Susan Koeppen takes a look at an investigation being released Monday by Consumer Reports.
Though manufacturers and salesmen say that these products are safe, the new study says some protein drinks may cause health problems over time. The investigation found some contain things like arsenic, cadmium, and lead.
CBS News took a hidden camera to nutrition stores in New York City asking about these supplemental drinks, but not one sales person warned about possible health risks.
Some said taking more than recommended doses wouldn't hurt.
But trainer/dietician Erin Palinski says, not so. "They're actually going to harm their health if they do excessive amounts," said Palinski.
Experts say too much protein can lead to dehydration and digestive problems, increase your risk for osteoporosis, and for some people, cause kidney problems.
http://www.youtube.com/watch?v=gCAmLgwV9bs
The supplement industry disputes claims that protein shakes could be harmful.
Andrew Shao, of the Council for Responsible Nutrition, says, "The results of this analysis aren't alarming. The heavy metals that were found are well below the limits FDA (Food and Drug Administration) would be concerned about, so they don't pose a health risk to consumers at all."
But Consumer Reports says there is little regulation requiring manufacturers to prove their protein drinks are safe.
"We think the FDA should be tracking these products better," says Rangan, "and that is not happening at this time."
The manufacturers of those three products say independent testing shows their products are within government safety standards even if taken three times a day.
Still, CR notes there other ways to get protein at a cheapter price, such as:
Half a chicken breast (27 grams of protein, 62 cents per serving)
Three glasses of milk (23 grams of protein, 60 cents per serving)
Three scrambled http://numerousinjury840.exteen.com/20150907/advocare-24-day-challenge-unbiased-reviews-tips-and-tricks-t eggs (20 grams of protein, 46 cents per serving)
Copyright 2010 CBS. All rights reserved.
