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Updated: Aug 17, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
[Body-weight regulation in children: a key to obesity physiopathology understanding]
1Service de gastro-entérologie et nutrition pédiatriques, hôpital d'enfants Armand-Trousseau, AP-HP, Paris, France. p.tounian@trs.ap-hop-paris.fr
Insights
The body’s weight regulation system, the adipostat, defends against weight loss, explaining obesity treatment failures. Targeting this energy-regulating system offers a promising therapeutic strategy for obesity.
Area of Science:
- Physiology
- Neuroendocrinology
- Metabolic Regulation
Context:
- Body weight is maintained within a narrow range through a process called the adipostat.
- Peripheral signals like leptin and ghrelin inform the hypothalamus about energy stores.
- The hypothalamus regulates appetite and energy expenditure to maintain energy balance.
Purpose:
- To explain the physiological mechanisms underlying body weight regulation.
- To elucidate the role of the adipostat in maintaining stable body weight.
- To understand why obesity treatments often fail due to the adipostat's resistance to weight loss.
Summary:
- The adipostat system actively defends against weight loss by increasing appetite and reducing energy expenditure.
- Obese individuals exhibit adipostat mechanisms that maintain elevated body weight.
- This inherent resistance explains the common ineffectiveness of traditional obesity treatments.
Impact:
- Understanding the adipostat's role provides insight into the challenges of obesity management.
- Identifying the adipostat's resistance mechanisms opens avenues for novel therapeutic strategies.
- Directly targeting the energy-regulating system may offer a more effective approach to treating obesity.
Abstract:
Body weight is regulated within a narrow, individualized range despite large daily caloric mismatches. This process which maintains a stable level of body weight is known as adipostat. Peripheral adiposity signals, mainly leptin and ghrelin, communicate the status of energy stores in the body to the hypothalamus, which in turn coordinates adaptive responses to energy imbalances via reciprocal alterations in appetite and energy expenditure. Obese individuals also display behavioral and metabolic adjustments to weight perturbations as if their adipostat attempts to maintain their elevated body-weight. Efforts to reduce the weight of obese subjects from the elevated levels they ordinarily display are frequently ineffective because their adipostat actively resists by stimulating appetite and reducing energy expenditure. These adaptive responses to weight loss may be an explanation to understand the traditional failure of obesity treatment. Strategy of directly altering the energy-regulating system may be a promising therapeutic approach.
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