You Are What You Eat: Food As a Risk Factor and a Treatment for Depression

Inclusion Criteria: * 18+ years of age * Must own an Android or iPhone smartphone * Must be able to access phone one every 90 minutes * Able to attend consent call over zoom or phone * Endorsement of a PHQ-8 score of at least 10 assessed at consent * Endorsement of a PHQ-8 score of at least 8 assessed 24 hours prior to Visit 1 * Endorse daily intake of at least UPF foods * Willing to come to three in-lab visits * Willing to follow dietary guidelines * Must be able to speak, write, and read English fluently Exclusion Criteria: * Regular smoking of cigarettes or vaping of nicotine * History of medication that impact reward, eating, or indicate severe mental health conditions (e.g., Lithium) * The following medical conditions; Diabetes Type I, Diabetes Type II, Prediabetes, Bipolar Disorder, Schizophrenia, Psychotic Disorder, Depression with psychotic symptoms, Borderline Personality Disorder, Hypoglycemia, Substance use disorder (e.g., alcohol use disorder, opioid use disorder, cannabis use disorder), Obsessive compulsive disorder, and Post-traumatic stress disorder * Endorsement of a suicide attempt or having been hospitalized for psychiatric reasons in the last year * A diagnosis of a restrictive eating disorder (anorexia nervosa, bulimia nervosa, purging disorder) within the last 5 years * History of disorders that impact eating (e.g., cancer, irritable bowel syndrome, inflammatory bowel disease, hypothyroidism). * Current pregnancy, breast-feeding, trying to get pregnant…