When reaching for a low-carb snack, it's best to opt for something containing protein, healthy fats, and/or fiber, says Eleana Kaidanian, RD, a registered dietitian with her own practice.

The low residue diet differs from low-fiber diets because it also cuts out some meat and dairy. The low residue diet is not meant to help you lose weight. Instead, it's supposed to help heal your gut.