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Obesity

Obesity is a medical condition, considered a disease by multiple organizations, in which excess body fat has accumulated to such an extent that it can have negative effects on health. People are classified as obese when their body mass index (BMI)—a person's weight divided by the square of the person's height—is over 30 kg/m2; the range 25–30 kg/m2 is defined as overweight. Some East Asian countries use lower BMI thresholds to define obesity. Obesity is a major cause of disability and is correlated with various diseases and conditions, particularly cardiovascular diseases, type 2 diabetes, obstructive sleep apnea, certain types of cancer, and osteoarthritis.

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1,477trials recruiting now
United Statesmost trial sites (608)
400+mapped site locations
Novo Nordisk A/Smost active sponsor

Trials by phase

  • Early phase 115
  • Phase 1118
  • Phase 2105
  • Phase 3104
  • Phase 459
  • Not applicable (device/behavioral)771
  • Observational study335

Phase 1 tests safety, phase 2 tests whether it works, phase 3 compares it with standard care, phase 4 follows it after approval.

Countries with the most trials

  • United States608
  • China162
  • France90
  • Italy81
  • Canada80
  • Spain76
  • United Kingdom67
  • Germany65

Where trials are recruiting

Each dot is a site city; bigger dots have more recruiting trials. Showing up to 400 locations.

Lead sponsors

Novo Nordisk A/S · 36Eli Lilly and Company · 26Norwegian University of Science and Technology · 19University of Colorado, Denver · 16Mayo Clinic · 15Cairo University · 14Massachusetts General Hospital · 13Pfizer · 12

Newest recruiting trials

See all 1,477 on ClinicalTrials.gov →

General information only, not medical advice. Trial listings are written by sponsors; eligibility and contacts are on each official listing.