For nearly a century, scientists have struggled to make a diet pill that helps people lose weight without side effects that range from embarrassing digestive issues to dangerous heart problems. But this week, federal health advisers endorsed the weight loss pill Qnexa even though the FDA previously rejected it over concerns that it can cause heart palpitations and birth defects if taken by pregnant women.
Researchers surveyed nearly 5,000 high school students in the Twin Cities about their eating behaviors, then followed up with nearly 2,300 of them a decade later. They found that diet-pill use more than tripled in most of the age and sex groups during the 10-year study period.
Some previous studies have found that low carbohydrate diets like Atkins work better than a traditional low-fat diet. But the new research found that the key to losing weight boiled down to a basic rule _ calories in, calories out.
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