Greens, oranges, reds, purples, yellows...you get the picture. Eating the rainbow will supply your body with a range of disease-fighting phytonutrients, and will naturally fill you up to help you cut back on unhealthy foods, says Dr. Lipman. Plus, most adults struggle with getting the recommended five servings a day (though some say seven servings). A worldwide study in 2014 found 58 to 88% of adults don't hit that mark. Aiming for a diverse intake of produce from all colors of the rainbow will help you boost your intake. In another study, adults who were offered a variety of vegetables ate more of them without increasing the calories at the meal, found a 2012 study.
Nutritionists are always saying to eat more vegetables, so cook them in a way that takes them from ho-hum to yum. "I even think that steamed veggies can be very boring!" says Ilyse Schapiro, a greater New York City-area registered dietitian. Always incorporate high-flavor add-ons to jazz up veggies, like sautéing with olive oil and garlic, or spraying them with olive oil before throwing them in an oven with salt, pepper, and garlic powder. That way, you don't equate "healthy" with "tasteless," a mindset that will knock you off the veggie bandwagon fast. Another tip: buy a spiralizer and make zucchini noodles. Topped off with a rich tomato sauce, you'll feel like you're eating pasta.
Juice diets do prevent your body from going into a state called ketosis, he says. Ketosis means your body has no carbohydrates to burn for energy, so it has to burn stored fat or whatever else is available, he tells WebMD. "You feel bad, even smell bad. That's what makes you feel like hell during a [water-only] fast. But is that because the toxins are coming out? No! You're going into ketosis. It's known physiology."