The Obesity Medicine Association's full clinical algorithm for treating obesity as a chronic disease. The takeaway: obesity is biology, not willpower - and it is treatable.
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2021 OMA Obesity Algorithm (PDF, 143 pages)
For the patient who has tried hard and still can't sustain weight loss, this algorithm explains why - and reframes what effective treatment looks like. It is the Obesity Medicine Association's clinical playbook for treating obesity as an adiposity-based chronic disease rather than a behavior problem. (Written for clinicians, but the core ideas matter for anyone guiding care.)
Dr. Hammer's 5 Second Takeaways
Obesity is a disease, not a willpower problem
The foundational reframe of the whole algorithm: excess adiposity is a chronic, biologically driven disease shaped by genetics, neurohormonal signaling, and environment. That's why it resists effort and recurs - and why treating it as a discipline failure both stigmatizes patients and misses the real targets for care.
Where fat sits matters more than BMI
Visceral and abdominal fat drive cardiometabolic risk far more than total weight or BMI. Two people at the same BMI can carry very different risk depending on where they store fat, so assessment has to look past the number on the scale.
Put it into action: Use waist circumference and body composition, not BMI alone, when assessing risk.
"Sick fat" (adiposopathy) is the engine of disease
The algorithm leans on the concept of adiposopathy: dysfunctional fat tissue behaving like an endocrine organ gone wrong, driving insulin resistance, abnormal lipids, high blood pressure, and elevated cardiovascular and cancer risk. This is the mechanism that links obesity to its many complications.
Even a 5-10% loss delivers real wins
Modest, sustainable weight loss meaningfully improves blood sugar, blood pressure, and lipids. Chasing a "perfect" or cosmetic number is neither necessary nor realistic for genuine health gains.
Put it into action: Anchor early goals around a 5-10% reduction and track metabolic markers, not just pounds.
Treatment is individualized and multi-modal
The algorithm combines nutrition, physical activity, behavioral support, and medication when appropriate - matched to the individual rather than a one-size protocol - and treats obesity as a long-term condition that needs ongoing support.
Put it into action: Build a combined plan across nutrition, movement, behavior, and pharmacotherapy, and plan for long-term follow-up rather than a short course.
Go to the Source:
This summary is drawn from the Obesity Medicine Association's 2021 Obesity Algorithm, a 143-page clinical reference used by obesity-medicine clinicians. The full document - diagnostic criteria, classification tables, comorbidity detail, and treatment pathways - is in the linked PDF above.