To establish an obesity specific disease cohort database and form a special disease cohort, so as to provide guarantee for carrying out high-quality real-world clinical research and clinical research.

Inclusion Criteria:

• Patients aged 18-75 years with simple obesity. Simple obesity diagnosis criteria: meet one of the following conditions

  1. BMI≥25 kg/m2
  2. Waist circumference for male/female ≥90/80 cm
  3. Waist-to-hip ratio: 0.9 (male); 0.85 (female)

Exclusion Criteria:

• Patients aged 18-75 years with simple obesity. Simple obesity diagnosis criteria: meet one of the following conditions

  1. BMI≥25 kg/m2
  2. Waist circumference for male/female ≥90/80 cm
  3. Waist-to-hip ratio: 0.9 (male); 0.85 (female)

Patients with obesity, aged 18-75 years, who met the diagnostic criteria for simple obesity and did not participate in any drug clinical trials within 3 months prior to inclusion.