Publicaciones científicas

Variability of appetite control mechanisms in response to 9 weeks of progressive overfeeding in humans

Jebb SA, Siervo M, Frühbeck G, Goldberg GR, Murgatroyd PR, Prentice AM.
MRC Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, UK.

Revista: International Journal of Obesity

Fecha: 14/02/2006

Endocrinología y Nutrición

Background
The current epidemic of obesity demonstrates that mechanisms for maintaining human energy balance are readily subverted by adverse environmental conditions. The critical elements of this dysregulation are poorly understood. Most previous research into what regulates the intake side of the energy balance equation has been handicapped by the use of short-term within-day experimental tests.

Objective
We enrolled six non-obese men to a 17-week protocol involving three 21 days periods of progressive overfeeding (+20, +40 and +60%) separated by free diet periods to test for compensatory satiety.

Results
Responses to overfeeding differed markedly with evidence of 'compensators' and 'non-compensators', but on average, subsequent food intake was stimulated rather than suppressed after overfeeding in spite of markedly elevated body fat (+13%) and fasting leptin (+116%).

Discussions
The inefficient response of in-built appetite control mechanisms emphasizes the need to adopt intentional cognitive restraint in the modern environment when food is plentiful.

CITA DEL ARTÍCULO  Int J Obes (Lond). 2006 Jul;30(7):1160-2. Epub 2006 Feb 14.

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