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Early Impact of Bariatric Surgery on Brain Functionality.

Bruna Barros Fernandes1, Larissa Espindola da Silva1, Stefanny da Silva Willemann1

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Journal of Metabolic and Bariatric Surgery
|September 8, 2025
PubMed
Summary

Metabolic and bariatric surgery (MBS) effectively reduces weight and improves metabolic health but can cause early brain changes. Patients may experience mood shifts and psychiatric issues post-MBS, requiring careful monitoring.

Keywords:
Bariatric surgeryBrainObesity

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Public Health

Background:

  • Obesity is a global public health crisis characterized by chronic inflammation.
  • Metabolic and bariatric surgery (MBS) is a common treatment for obesity, offering significant weight loss and metabolic improvements.
  • While MBS benefits the central nervous system, it can also lead to neuronal complications.

Purpose of the Study:

  • To review the early neurological effects of MBS on patients.
  • To examine changes in hormonal balance, reward pathways, mood, and mental health within 6 months post-surgery.
  • To highlight both the benefits and risks of MBS on brain function.

Main Methods:

  • Literature review of studies on the early postoperative effects of MBS.
  • Analysis of research focusing on hormonal, reward system, mood, and mental health changes.
  • Inclusion of studies observing effects up to 6 months after MBS.

Main Results:

  • MBS leads to significant weight reduction and improved metabolic conditions.
  • Early postoperative phases show hormonal shifts, altered reward mechanisms, and impacts on mood and mental health.
  • While quality of life often improves, patients may face emotional vulnerability, nutritional deficits, and psychiatric complications.

Conclusions:

  • MBS offers substantial benefits for obesity and related conditions.
  • The early postoperative period after MBS requires attention due to potential neurological and psychiatric complications.
  • Interventions are crucial to support patient quality of life during the early recovery from MBS.