Protein is needed to build and maintain muscle mass. I would guess that you probably don't need to be supplementing your diet with protien bars though. If you are overweight and your goal is to lose fat, then you need to reduce your calories. A lot of protien bars and supplements are very high in calories because they are designed for people who want to add mass; you want to lose it. I would suggest reducing your portion sizes and making an effort to eat leaner. Eat chicken and fish instead of beef and pork etc. good luck
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--size matters not-- yoda
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