The obese group will enroll 500 people within 1 year of study initiation and follow-up annually. The control group will enroll 30 patients a year for 5 years.
The purpose of this study is to establish a prospective cohort. From registration to the 5th year, basic investigation, specific examinations for cardiovascular and metabolic disease, basic blood tests, collection of human material samples, and clinical event follow-up are conducted yearly. The obese group will be examined yearly, and telephone follow-up will be conducted if necessary. The control group will participate in the baseline survey once enrollment and clinical event follow-up by phone will be conducted annually thereafter. From the 6th year, only clinical event follow-up will be conducted.