Muscle Loss on GLP-1s: What the Evidence Really Shows
New body composition data compares lean mass loss on tirzepatide and semaglutide. Here is what is measured, and what remains unclear.
Jun 15, 2026

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15 stories for“body composition”
New body composition data compares lean mass loss on tirzepatide and semaglutide. Here is what is measured, and what remains unclear.
Jun 15, 2026

In 1,900 American adults, waist circumference on its own matched a new multi measurement framework against a proper body fat scan. BMI alone missed a substantial number of people who met the body fat criteria for obesity.
Sep 1, 2026

Tirzepatide just earned an approval that has nothing to do with the scale. Here is what SELECT, FLOW and the new sleep apnea data show.
Jan 8, 2025

Work in EMBO Reports finds obesity leaves a chemical mark on CD4 T cells that outlasts weight loss. The authors suggest the immune system may need years of sustained maintenance to reset, and say plainly that no long term human study confirms it.
Sep 1, 2026
