Diet-Soda Belly

It's not surprising that drinking all the sugar in sodas would cause weight gain, but what is surprising is that even diet soda will pack on the pounds: Researchers from the University of Texas Health Science Center monitored 475 adults for 10 years, and found that those who drank diet soda had a 70 percent increase in waist circumference over the 10-year study, compared with those who didn't drink any soda. Those who drank more than two diet sodas per day saw a 500 percent waist expansion! A separate study the same researchers conducted on mice suggested that it was the aspartame, which raised blood glucose levels, that caused the weight gain; when your liver encounters too much glucose, the excess is converted to body fat.

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