Inclusion Criteria:  For an eligible patient, all inclusion criteria must be answered "yes"  Signed informed consent obtained prior to any study-related activities Patients of FEMAP who are between the ages of 16 and 28 Currently on a stable dose of an antidepressant, mood stabilizer, and/or antipsychotic drug AND have experienced what they deem to be problematic weight gain (approximately greater than 5% of initial body weight) that was temporally linked with initiating the drug, as confirmed by a psychiatrist Have a body mass index of ≥ 21.7 kg/m2 (midpoint of normal BMI (18.5-24.9).  Exclusion Criteria:  Participants who are unable to follow multi-step instructions independently, as determined by the treating psychiatrist. Participants who are pregnant or planning to get pregnant Patients on medications that have weight loss as a potential side effect i.e. topiramate, metformin, psychostimulants. Current active eating disorder i.e. bulimia nervosa, binge eating disorder, anorexia nervosa Currently on a weight-loss diet plan i.e. ketogenic diet, detox diet Currently using a medication for weight loss i.e. Contrave (bupropion / naltrexone), Saxenda (liraglutide) Current use of dietary supplements for weight loss i.e. garcinia cambogia; or use within 4 weeks prior to study initiation Bowel surgery Crohn's disease or other bowel conditions Blood/bleeding/liver/kidney disorders Currently enrolled in other clinical trial which may affect their study outcome