Fattening Carbs—Some Promote Obesity and Worse

By Janet Raloff, 15:57 PM April 15, 2008

Nutritionists call them carbohydrates. To most of us, they're simply sugars and starches. And although the fructose in soft drinks and the refined flour in white bread taste quite different, "nutritionally and metabolically they're the same as table sugar," explains endocrinologist David S. Ludwig. That's because the body digests all carbohydrate-rich foods into glucose, or blood sugar.

However, all carbs don't break down at the same rate. The body digests those in many whole-grain products q...

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