Leptin

Leptin is a hormone that plays a crucial role in regulating appetite and metabolism, making it essential for understanding obesity and metabolic health. Studies have found that leptin primarily functions to signal the brain about fat stores, helping to control food intake and energy expenditure. In individuals with obesity, leptin levels are often elevated, but the body may become resistant to its effects, leading to continued overeating despite ample fat reserves. Leptin also influences glucose and lipid metabolism in various tissues, affecting insulin sensitivity and fatty acid oxidation.

Leptin's impact extends beyond weight management, as it interacts with cardiovascular health and immune function. Despite its importance, the relationship between leptin and metabolic disorders is complex, with resistance to leptin action complicating therapeutic approaches. The evidence for leptin’s role in these processes is robust but continues to evolve, highlighting the need for further research to fully understand its mechanisms and potential clinical applications.

Sources

• Leptin and Obesity: Role and Clinical Implication. (PMID:34084149)
• Leptin Function and Regulation. (PMID:29357132)
• Leptin in Leanness and Obesity: JACC State-of-the-Art Review. (PMID:33573745)
• Tissue-Specific Effects of Leptin on Glucose and Lipid Metabolism. (PMID:33150398)
• Leptin, Obesity, and Leptin Resistance: Where Are We 25 Years Later? (PMID:31717265)
• Incendiary Leptin. (PMID:32069871)

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