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The GLP Truth

Clinical Science

Peer-reviewed research, clinical trial results, and evidence-based analysis on GLP-1 receptor agonists, muscle preservation, and metabolic health.

Resistance training
Investigation

The Muscle Crisis: 25–40% of GLP-1 Weight Loss Is Lean Mass, Not Fat

Clinical trial data reveals that a quarter to nearly half of weight lost on GLP-1 medications is lean muscle mass—not adipose tissue. The crisis the industry hides.

Investigation · 10 min read
Clinical Trial

SURMOUNT-5: Tirzepatide Outperforms Semaglutide in First Head-to-Head Trial

The long-awaited direct comparison showed tirzepatide producing 20.2% body weight loss versus 13.7% for semaglutide over 72 weeks.

NEJM · 2026 · 7 min read
Featured Report

The Truth About GLP-1s: 5 Things Your Provider Isn't Telling You

Over 40 million Americans have been prescribed a GLP-1 medication. Most were never told the five things in this report.

Featured Investigation · 12 min read
Physician-Led Program · Lion MD
Compounded Tirzepatide
Dual-action GLP-1/GIP. Enhanced appetite control + metabolic improvement.
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