Clinical Research Directory

Inclusion Criteria: * Adults aged 20 years or older * Individuals from the general population who underwent a health examination at the Seoul National University Hospital Healthcare System Gangnam Center * Individuals who are capable of independently using a smartphone and operating study-related applications or text messaging functions * Individuals without conditions that significantly interfere with standard dietary management, as specified in the exclusion criteria \[Section 9.2 Exclusion Criteria\] Exclusion Criteria: * Individuals unable to use a smartphone or study-related digital program/application, including those without a smartphone or unable to operate text messaging or application-based functions. * End-stage renal disease or patients currently receiving dialysis * Active cancer or currently undergoing chemotherapy or radiotherapy * Severe heart failure, liver cirrhosis, or hepatic insufficiency accompanied by varices, bleeding, ascites, hepatic encephalopathy, or jaundice * Malabsorption disorders such as Crohn's disease or short bowel syndrome * Poorly controlled hyperthyroidism or hypothyroidism * Diagnosed eating disorders or severe psychiatric disorders * Pregnant or breastfeeding women, or women who may become pregnant during study participation. * Individuals with recent major weight-related interventions or extreme body weight changes within the past 3 months, including:Bariatric surgery such as gastrectomy or gastric bypass surgery Newly initiated anti-obesity pharmacotherapy (e.g., semaglutide/Wegovy, tirzepatide/Mounjaro) * Individuals considered by the investigator to have poor compliance potential or otherwise deemed unsuitable for participation in the clinical study.