Why You Keep Gaining Weight Back (NJ Insight)
Published by New Jersey Trim Clinic · Updated 2025-10-25
Weight Regain Isn't Your Fault
If you keep gaining weight back after losing it, you are in the same boat as the majority of dieters. Long-term studies show that 80–95% of people regain the weight they lose within 5 years.
This is not because you "let yourself go." It is because your body actively fights to return to its previous weight through a process called metabolic adaptation.
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What Your Body Does After Weight Loss
After significant weight loss, your body:
- Burns 200–500 fewer calories per day than expected for your new weight
- Increases ghrelin (the hunger hormone)
- Decreases leptin (the satiety hormone)
- Reduces GLP-1 activity
This combination makes maintaining the loss almost impossible through lifestyle alone. Your biology is genuinely working against you.
Breaking the Regain Cycle
GLP-1 therapy interrupts this regain mechanism by sustaining satiety signaling and reducing hunger long-term. This is why GLP-1 medications are increasingly used as long-term maintenance — not just for weight loss, but to keep it off.
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