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[Energy expenditure and obesity]
1Laboratoire de Médecine expérimentale ULB et Hôpital Saint-Pierre, Bruxelles.
Revue Medicale De Bruxelles
|July 1, 1994
Summary
Obesity is not caused by deficient energy expenditure. Scientific evidence shows obese individuals have higher metabolic rates and energy expenditure, refuting the "metabolic obesity" theory.
Area of Science:
- Metabolic studies
- Obesity research
- Human physiology
Context:
- Investigating the etiology of human obesity.
- Evaluating the role of energy expenditure in weight gain.
- Addressing patient misconceptions about metabolic obesity.
Purpose:
- To analyze literature on energy expenditure in obesity.
- To determine if reduced energy expenditure contributes to excess body weight.
- To critically assess the concept of
Summary:
- Self-reported energy intake is unreliable, with obese individuals underreporting by up to 50%.
- Obesity correlates with increased basal metabolic rate and 24-hour energy expenditure.
- Caloric restriction lowers energy expenditure, but weight-maintenance post-obese individuals have normal metabolic rates.
- Overfeeding studies show no reduced energy cost for weight gain in obese subjects.
Impact:
- Challenges the notion of