Diet Therapy By Denise Millstine, MD, Mayo Clinic Reviewed / Revised Oct 2021 | Modified Sep 2022 View Patient Education Ornish Diet Macrobiotic Diet Paleo Diet References Diet therapy, a biologically based practice, uses specialized dietary regimens (eg, Gerson therapy, macrobiotic diets, Pritikin diet) to Treat or prevent a specific disorder (eg, cancer, cardiovascular disorders) Generally promote wellness Detoxify the body (ie, neutralize or eliminate toxins from the body) Some diets (eg, Mediterranean diet) are widely accepted and encouraged in conventional and integrative medicine.