Fat-Fighting Strategy Focuses on Prevention A new study predicts 40 percent of Americans will soon be obese, and scientists conceded that changes in metabolism that come with weight gain make reducing difficult. Researchers in Colorado are focusing on prevention, which takes less sacrifice and effort than many might believe. NPR's Richard Knox reports.

Fat-Fighting Strategy Focuses on Prevention

Fat-Fighting Strategy Focuses on Prevention

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A new study predicts 40 percent of Americans will soon be obese, and scientists conceded that changes in metabolism that come with weight gain make reducing difficult. Researchers in Colorado are focusing on prevention, which takes less sacrifice and effort than many might believe. NPR's Richard Knox reports.