According to new report, consuming a diet that includes healthy fats such as olive oil and nuts isn’t likely to cause weight gain. The study included more than 7,400 women and men who ate one of three meal plans: an unrestricted-calorie Mediterranean diet rich in olive oil; an unrestricted-calorie Mediterranean diet rich in nuts; or a low-fat diet intended to avoid all dietary fat. After five years, the researchers found that a diet with little fat did not result in more weig