Letters The science of obesity

Restricting dietary carbohydrate versus increasing physical activity in tackling obesity

BMJ 2013; 346 doi: http://dx.doi.org/10.1136/bmj.f3018 (Published 22 May 2013) Cite this as: BMJ 2013;346:f3018
  1. John C Peters, professor of medicine and chief strategy officer1,
  2. James O Hill, professor of medicine and executive director1
  1. 1Anschutz Health and Wellness Center, Aurora, CO 80045, USA
  1. john.c.peters{at}ucdenver.edu

Taubes’s portrayal of “energy balance” is inaccurate.1 2 Because the energy balance is a dynamic model—with interactions between energy intake, energy expenditure, and energy storage—it is not useful to ask questions like “is it carbohydrates or calories?” The best diet for managing weight depends on the level and nature of energy expenditure and the size and composition of energy stores. Current science suggests that …

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