That bagel could go right to your gut. But a bit of olive oil each day may help keep your middle little.
Besides making you sad when you zip up your pants, excessive abdominal fat increases your risk for high blood sugar and many other health problems. But in a recent study of overweight people, a Mediterranean-style diet -- where approximately 30% to 40% of the calories came from unsaturated fats, like those in olive oil -- seemed to help prevent tummy-expanding over time.
Another bonus: The fat-focused diet helped people maintain better insulin sensitivity, too. Not so with the high-carb diet, which seemed to encourage body fat to relocate to people's bellies.