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Fat

When it comes to fat, labels can say many things. Low fat, reduced fat, light (or lite), and fat free are common terms you're sure to see on food packages. The U.S. government has strict rules about the use of these phrases: By law, fat-free foods can contain no more than 0.5 grams of fat per serving. Low-fat foods may contain 3 grams of fat or less per serving. Foods marked reduced fat and light (lite) are a little trickier, and you may need to do some supermarket sleuthing.

Light (lite) and reduced-fat foods may still be high in fat. The requirement for a food to be labeled light (lite) is that it must contain 50% less fat or one third fewer calories per serving than the regular version of that food. Foods labeled reduced fat must contain 25% less fat per serving than the regular version. But if the regular version of a particular food was high in fat to begin with, a 25% to 50% reduction may not lower the fat content enough to make it a smart snacking choice. For example, the original version of a brand of peanut butter contains 17 grams of fat and the reduced fat version contains 12 grams. That's still a lot of fat!

It's important to figure out how many of the calories you're getting come from fat. The 2005 U.S. dietary guidelines recommend that children and teens ages 4-18 get between 25% to 35% of their daily calories from fat. But food labels don't always show the percentage of fat in a food. It is easy to calculate, though. Divide the number of calories from fat by the number of total calories and multiply by 100: