Fat has more than twice the calories of carbs or protein, but, “your body needs
fat to function,” says Kleiner. “When you don’t get enough in your diet, your
brain sends a signal to your cells to hold onto body fat”.  This means you might
need to actually increase your fat intake in order to slim down.

So consider foods with good for you fat sources in each meal, like avocado, olive oil and salmon.

(source:  Shape.com)