Like left-handed? Eating should also be coordinated with exercise, which is basically based on your exercise, and the effect may be 10%-20%. But he is safe.
Not to mention local ones. Unless liposuction, the most effective, lasting and healthful thing is aerobic+strength training+regular diet.
Aerobic is to make you slim down, strength training is to improve your local body shape, and regular diet is to maintain it.