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The Role of Leptin in Body Weight Regulation and Strategies to Overcome Leptin Resistance

Oliwia Kaczmarek

Oliwia Kaczmarek

2026-03-24
6 min. read
The Role of Leptin in Body Weight Regulation and Strategies to Overcome Leptin Resistance
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Excess weight has become a significant health concern in today's society, with an increasing number of people struggling with obesity, leading to a variety of chronic conditions such as type 2 diabetes, heart disease, or skeletal issues. One of the crucial factors impacting weight regulation and metabolic health is leptin, a hormone that serves as a signalling agent informing the body about the state of energy reserves. Therefore, understanding its role in the body is of utmost importance in the context of effective measures against obesity and related diseases.

The role of leptin in regulating energy homeostasis and physiological processes in humans

Leptin, a critical peptide-based hormone, serves as a pivotal regulator of energy homeostasis within the human body. Its primary mechanism of action involves the modulation of hunger and satiety perceptions through interactions with receptors situated in the hypothalamus—the brain’s central hub for appetite control. Elevated circulating levels of this hormone convey to the nervous system that sufficient energy stores are available, thereby suppressing appetite and reducing daily caloric intake. Furthermore, by activating sympathetic pathways, leptin exerts multifaceted effects on metabolic processes, including the breakdown of adipose tissue (lipolysis) and heat generation (thermogenesis), which collectively contribute to the maintenance of energy balance (as evidenced by research conducted by Pereira et al. in 2021). Beyond its role in appetite regulation, this hormone participates in a broad spectrum of biological functions, encompassing reproductive system operations—such as fertility and menstrual cycle regulation—as well as the modulation of immune responses and neuroprotective mechanisms (as corroborated by findings from Obradovic et al. in 2021).

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Metabolic Health Leptin Obesity Leptin Resistance Type 2 Diabetes
Oliwia Kaczmarek

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