3. Skimping on fruits and vegetables

Source: The Food Marketing Institute
"Fruits and vegetables are packed with vitamins, minerals, water and fiber, plus they are relatively low in calories," Held says. That combination of fiber and water enables you to feel full longer, important for weight control. Produce is also naturally low in fat and sodium and contains phytochemicals, compounds in plants that may reduce the risk of certain diseases. "The deeper and more vibrantly colored produce is packed with the most nutrients," she says. And yes, frozen, canned or dried foods are just as nutritious as their fresh counterparts because they are packaged at their nutrient peak, she says.