48 Hours

Heavy Burden: Eat It Raw (17x9)

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Is a green liquid, which looks a lot like pond scum, the miracle we've all been searching for? A way to live longer and lose weight? Stephanie Keys found out. "I'm heavier now than I've ever been in my entire life," said Keys, who lives in Los Angeles. "So that's why I'm giving this 21 days and trying it out." Like a lot of women, this busy mother of two is watching her weight. A former Revlon model, she'd tried all the diets. So, she decided to try something new called "detoxing." Correspondent Bill Lagattuta reports on this health craze.