Aisle 9: Dairy
Reach for: Low-fat (or skim) milk
The payoff: Switch from whole to 2 percent and you'll cut the saturated fat from 23 percent of your daily allotment to 15 percent for a one-cup serving. By going from 2 percent to 1 percent you'll slash the saturated fat from 15 percent to 7 percent. One cup of fat-free has just 2 percent of your saturated fat for the day.