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GLP-1s May Be Working in an Entirely Different Way Than We Thought
sciencealert.com • • general
Key Points:
- New research in mice suggests that semaglutide's long-term weight-loss effects depend not only on appetite suppression but also on the function of brain cells called AgRP neurons, which regulate energy balance.
- Female mice with disrupted AgRP neurons continued to eat less under semaglutide treatment but regained weight, indicating that reduced food intake alone does not explain the drug's full weight-lowering effect.
- The study found that AgRP neurons play a role in mobilizing stored fat, which is necessary to sustain semaglutide's weight loss, highlighting a more complex mechanism than previously understood.
- These findings were specific to female mice and have not yet been confirmed in humans, so they should not influence current clinical use of semaglutide or similar GLP-1 drugs.
- Further research could clarify individual responses to semaglutide and aid in developing more effective weight-loss treatments by targeting these neuronal pathways.
