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 weight loss, but it did result in a greater likelihood of increased waist circumference, which is a risk factor for chronic diseases like type 2 diabetes.
In a commentary that accompanied the study Dr. Dariush Mozaffarian notes, "Dietary guidelines should be revised to lay to rest the outdated, arbitrary limits on total fat consumption. Calorie-obsessed caveats and warnings about healthier, higher-fat choices such as nuts, phenolic-rich vegetable oils, yogurt, and even perhaps cheese, should also be dropped."
The Lancet Diabetes & Endocrinology, June 2016