calcium for people trying to lose fat, according to a study Rapid Tone published in the International Journal of Obesity. 5. Salmon An increase in the amount of omega-3 fatty acids that you consume can also be of help in your fat burning efforts. Among the many other health benefits of omega-3, it is also thought to make metabolism more efficient and able to control insulin levels. Eat more fatty fish, like salmon, and it will help control cravings and make you fat to make your stomach easier to lose. 6.