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GLP-1 TV · Clinician · views checked Oct 2026

GLP-1 Drugs and Muscle Loss: What the Clinical Trials Actually Show

ClinicianBarbell Medicine3,740 views7:20Mar 2026

Our summary

A clinician talks through semaglutide side effects. Side effects mentioned: muscle loss. Also covers food, protein and eating, exercise and strength and the trials.

General education as published by the channel. Not medical advice, and not an endorsement.

Key moments

From the creator's own chapters. Tap one to play from there.

  1. 0:00 GLP-1s Don't Use the Same Pathways as Exercise
  2. 0:19 The Weight Loss Numbers: Semaglutide vs. Tirzepatide
  3. 0:40 The Trial Data: What DXA Actually Measured
  4. 1:18 Why Those Lean Mass Percentages Are Overstated
  5. 1:48 The MRI Evidence: Myosteatosis Reduction on Tirzepatide
  6. 2:05 Functional Data: Handgrip Strength and Sarcopenic Obesity
  7. 2:28 The BELIEVE Trial: 93% of Weight Loss From Fat
  8. 3:05 What to Do If You're on a GLP-1

What the video says

As stated in the video, not checked by us. Doses and results are the speaker’s, not advice.

Medication
semaglutide, tirzepatide and retatrutide
Side effects mentioned
muscle loss
Who is speaking
Clinician

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Food, protein and eatingExercise and strengthThe trialsMuscle loss

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