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Leptin a potential link between obesity and depression.

Lourdes Hontecilla-Prieto1,2, Daniel José García-Domínguez2,3, Carmen Berlanga-Gil2

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Summary
This summary is machine-generated.

Obesity and depression are linked, with the hormone leptin potentially playing a key role. Elevated leptin levels in depression may contribute to inflammation, increasing depression risk in obesity.

Keywords:
Bipolar and depression disordersInflammationLeptinObesity

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Area of Science:

  • Endocrinology
  • Psychiatry
  • Neuroscience

Background:

  • Obesity is a global epidemic impacting diverse populations.
  • Depression is a highly prevalent psychiatric disorder.
  • The bidirectional relationship between obesity and depression is a significant public health concern.

Purpose of the Study:

  • To conduct a scoping review on the relationship between obesity, leptin, and depression.
  • To analyze leptin's role in the shared pathophysiology of obesity and psychiatric disorders.
  • To explore leptin's potential involvement in the neuroinflammatory state linked to depression.

Main Methods:

  • Scoping review of existing literature.
  • Analysis of research on leptin's function in energy balance and appetite.
  • Examination of studies investigating leptin's influence on mood and behavior.

Main Results:

  • Leptin, a hormone from adipose tissue, is closely associated with obesity.
  • Emerging evidence suggests leptin influences mood and behavior.
  • Literature indicates increased leptin levels in depression, potentially mediating inflammation.

Conclusions:

  • Leptin may play a pathophysiological role in depression associated with obesity.
  • Chronic inflammation in obesity might be influenced by leptin, contributing to neuroinflammation.
  • Further clinical research is necessary to elucidate leptin's mechanisms in obesity-related depression.