We tend to think of fat as nothing more than extra baggage, something that slows us down, makes our jeans fit tighter and, if we're being honest, messes with our confidence in the gym and bedroom.

Low-fat cheeses contain no more than 1 gram of saturated fat per serving and include nonfat and low-fat versions of cheeses like cheddar and Swiss, as well as cottage cheese, ricotta, and mozzarella.

Vitamins are classified as either fat-soluble or water-soluble based on how the body absorbs and stores them. The fat-soluble vitamins—A, D, E, and K—are absorbed with fat and stored in the liver, ...