Obesity & Metabolism: The Landmark Trials

The evidence base for modern obesity pharmacotherapy, lifestyle intervention, fatty liver, and insulin resistance — from SCALE and STEP to SURMOUNT — each in PICO format.

The arrival of highly effective obesity pharmacotherapy has reshaped metabolic medicine. This page maps the trials behind weight management, fatty liver, and insulin resistance. Each link opens a concise PICO summary with expert commentary.

Obesity pharmacotherapy

  • SCALE — liraglutide 3.0 mg: the trial that opened the era.
  • STEP 1 — semaglutide 2.4 mg: 14.9% weight loss.
  • SURMOUNT-1 — tirzepatide: up to 20.9% weight loss.

Lifestyle & weight management

  • Look AHEAD — the limits of lifestyle for cardiovascular endpoints, and why pharmacotherapy mattered.

MASLD / fatty liver

Browse every summary

Obesity & Weight Management ·
Metabolic Syndrome & Insulin Resistance ·
MASLD / Fatty Liver ·
Nutrition & Lifestyle

Hormone Insight summaries are reviewed by a practicing endocrinologist and are for healthcare professionals. They summarise published evidence and do not constitute medical advice. See our Editorial Guidelines.

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