Caspian Healthcare
All calculators

Obesity · For doctors and patients

EOSS obesity staging

The Edmonton Obesity Staging System grades obesity from 0 to 4 by what it is doing to health, not by weight alone. Fill in what you know; the page shows the stage, the finding that set it, what is still missing, and what the stage means for treatment.

Built by Dr. Khizer Hussain Junaidy · Diabetologist & Bariatric Physician · Telangana State Medical Council 04937 · Reviewed September 2026

A staging aid, not a diagnosis. The stage is only as good as the assessment behind it: blood tests, blood pressure, a sleep and joint history, mood and daily function. Adults only. Nothing you enter leaves this device.

1. Measurements

Sex
BMI
–
kg/m²
Waist-to-height
–
above 0.5 is central obesity

2. Metabolic

Blood pressure mmHg
/
Lipids mg/dL, fasting or not
Other weight-related conditions tick all that apply

3. Physical

4. Mental health

Over the last 2 weeks, how often has the person been bothered by:

5. Daily life

6. The stage

Sources

  1. Sharma AM, Kushner RF. A proposed clinical staging system for obesity. Int J Obes 2009;33:289–295. Nature
  2. Padwal RS, Pajewski NM, Allison DB, Sharma AM. Using the Edmonton obesity staging system to predict mortality in a population-representative cohort of people with overweight and obesity. CMAJ 2011;183:E1059–E1066. CMAJ
  3. Wharton S, et al. Obesity in adults: a clinical practice guideline. CMAJ 2020;192:E875–E891; and the assessment chapter (Rueda-Clausen et al.). CMAJ
  4. Misra A, Vikram NK, Ghosh A, et al. Revised definition of obesity in Asian Indians living in India. Diabetes Metab Syndr 2025;19:102989.
  5. Chiappetta S, et al. Surg Obes Relat Dis 2016;12:1847–1855 (EOSS and complications after bariatric surgery). Skulsky SL, et al. Surg Endosc 2021;35:7163–7173.
  6. Obesity Canada. EOSS staging tool (clinician guide), 2026: depression, anxiety and eating disorders among the moderate (stage 2) examples.
  7. Kroenke K, et al. PHQ-2 (Med Care 2003;41:1284–1292) and GAD-2 (Ann Intern Med 2007;146:317–325). Free to use.

Found an error? Write to info@caspianhealthcare.in.