The phrase "to help someone lose fat" means to assist or provide guidance for someone in losing body fat through diet, exercise or other methods. Full definition
Protein powder doesn't help you lose fat faster, either. (legionathletics.com)
And because muscles are a calorie burning powerhouse, they will help you lose fat in the long run. (fitnessandpower.com)
Of course, releasing fatty acids into your blood does not help you lose fat unless you are burning more calories than you consume through your diet. (healthline.com)