Clinical Research Directory

Inclusion Criteria: * Adults aged between 19 and 39 years at the time of screening. * BMI between 18.5 and 30 at the time of screening. * CES-D (Center for Epidemiologic Studies Depression Scale) score of 16 or higher. * Ability to access and respond to the survey via an online link. Exclusion Criteria: * Participation in any human clinical trial within the past 3 months before screening. * History of antipsychotic medication treatment within the past 3 months before screening. * Presence of chronic diseases, including cardiovascular, endocrine, immune, respiratory, hepatobiliary, renal and urological, neurological, musculoskeletal, inflammatory, hematological, oncological, or gastrointestinal disorders. * Use of medications or health supplements related to gut health and mood disorders (e.g., antibiotics, laxatives, antidiarrheals, prebiotics, probiotics, postbiotics, anxiolytics, antidepressants, etc.) within 1 month prior to participation in the study. * History of significant hypersensitivity to postbiotics or starch. * Alcohol addiction, drug abuse, or suspicion of substance misuse. * Pregnant or breastfeeding women. * Any other reasons that the study investigator deems the participant unsuitable for participation.