(HealthDayNews) -- If you're watching your waistline, avoid falling into the reduced-fat trap.
Calories add up whether they come from fat or carbohydrates, says the U.S. National Heart, Lung and Blood Institute. Eating fat-free or reduced-fat foods will only help you lose weight if you limit the amount you eat.
So don't go eating twice as many cookies as you normally would just because they're marked fat-free. If you do, you'll actually increase your caloric intake and may as well have eaten the real thing.
