Friday, September 05, 2008

The Diet Myth


In the classic starvation study (the Minnesota Semi-Starvation study) men were dieted for 6 solid months reaching 4-5% body fat at the end of the study. Then they were refed and body composition was tracked. By the theory being advocated, they should have gained lots of LBM and little fat during refeeding, they were clearly super lean to start out with. But this is absolutely not what happened.

As would be expected based on the metabolic adaptations to dieting, their bodies were mainly primed to replenish fat stores. Reductions in metabolic rate, fat oxidation and thermogenesis all contributed to a preferential gain of body fat and these systems didn’t reset themselves until all of the body fat lost had been regained (8). Quite in fact, signals from body fat (i.e. leptin and the rest) are the mechanism behind this physiology (9).

8) Dulloo AG et. al. Autoregulation of body composition during weight recovery in human: the Minnesota Experiment revisited. nt J Obes Relat Metab Disord. 1996 May;20(5):393-405.

9) Dulloo AG, Jacquet J. Adaptive reduction in basal metabolic rate in response to food deprivation in humans: a role for feedback signals from fat stores. Am J Clin Nutr. 1998 Sep;68(3):599-606.






note: Andrew DOES NOT advocate dieting, but rather, healthy eating. If you eat air for breakfast, lunch and dinner, you're doing to expect airy results.

Quote of the Day - Life is too short to tolerate bad food.

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