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Researchers Identify Brainstem Nerve Cells Driving Semaglutide’s Weight-Loss Effects

The discovery separates the drug’s appetite-suppressing benefits from its side effects, paving the way for safer obesity treatments.

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Overview

  • A study published in *Cell Metabolism* identifies specific nerve cells in the dorsal vagal complex that mediate semaglutide’s weight-loss effects in mice.
  • These nerve cells regulate appetite and fat loss without contributing to side effects like nausea and muscle loss.
  • When these cells were activated, mice experienced reduced food intake and weight loss similar to semaglutide treatment.
  • Ablating these cells diminished the drug’s appetite-suppressing effects but left its side effects unchanged.
  • The findings could lead to targeted therapies that retain semaglutide’s benefits while minimizing adverse reactions.