Fish oil supplementation boosts energy expenditure after a meal, so it makes weight loss or maintenance of a healthy weight a tiny bit easier. Canadian nutritionists at the University of Guelph discovered this from an experiment they did on six men whose glucose and insulin balance was out of whack. The polyunsaturated n-3 fatty acids in fish improve body composition. Studies show that they increase muscle mass and also help muscle mass to react better to strength training. They also induce the body to burn more energy. Studies also show that people who consume large amounts of fish fatty acids...