Pesticide-free organic food is preferable to avoid consuming added hormones or chemicals. It's also important to note that eating clean doesn't give you free reign to eat endless quantities. They may be healthy, but they still have calories!
"You always have to think about portion size," says Marissa Lippert, RD, owner of Nourish Kitchen + Table, a seasonally influenced cafe in New York City. "I always encourage people to think of their plate in terms of fifths: three-fifths should be fruits and vegetables, one-fifth should be protein, and one-fifth healthy carbs.