Avoid any prepared food that lists sugar, fructose, or corn syrup among the first four ingredients on the label.

24. Avoid any prepared food that lists sugar, fructose, or corn syrup among the first four ingredients on the label. You should be able to find a lower-sugar version of the same type of food. If you can’t, grab a piece of fruit instead! Look for sugar-free varieties of foods such as ketchup, mayonnaise, and salad dressing.