Pesticides are toxins, "and I think there's good cause for worry about them," says Purdy. A new study in Food and Chemical Toxicology links pesticide-laced feed to tumors and early death in rats. Organic is ideal, but if that's not possible, pick produce with thick skins that peel off, because they're less likely to be contaminated. (Here's how to save money on organics.)
Eat all the foods you enjoy—but the key is to do it in smaller quantities, says Elisa Zied, RDN, who has lost and kept off more than 30 pounds since her highest weight in high school. In fact, she says it's the number one change she made that's helped her maintain her smaller frame. "I didn't want to feel deprived as I had in previous attempts to lose weight," she says. The worst thing you can do is be too strict, then rebound by overeating because you're not satisfied.
Another spin on the 80/20 rule, says Dr. Lipman: stopping eating when you're 80% full. That means slowing down and checking in periodically throughout the meal about what your body is saying. Does the food no longer taste great? Are you getting that "I don't really need any more feeling"? Thinking 80/20 as you eat can help slow you down and be more mindful. Being in tune with your body prevents overeating, he says.
In a small skillet heat the remaining ½ teaspoon olive oil on medium low. Whisk the egg whites and eggs together with a tablespoon of water until light and airy and add to the small skillet. Let cook slowly undisturbed until ½ of the eggs have set. Use a spatula to gently lift one side of the omelet so that the runny eggs can pool below, then lay back down the cooked eggs and top the entire top of the omelet with cheese.
Dinner? That's miso soup with some chopped sea vegetables (like the Japanese nori, used to make sushi) snipped over top. Or you might choose a cup of brown rice with a few chopped vegetables mixed in. "Brown rice gives your body plenty of B vitamins, which is a stress reducer. It's very high fiber, will fill you up, will help you sleep, and will flush you out in the morning."