Beware of These Protein Bar Ingredients for Weight Loss, Experts Say.

Protein bars can be a convenient snack, but not all are healthy for weight loss. Registered dietitian Lori Walker warns against protein bars with high levels of added sugar, unhealthy fats, and refined carbohydrates content, as they can contain as many as 500 calories per bar. Instead, look for bars with high levels of dietary fiber, complex carbohydrates, lean proteins, and natural sources of sugar such as honey, maple syrup, or dates. Always read labels carefully and consult with a doctor or registered dietitian before starting any new diet program.