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Letters The science of obesity

Essay was based on incorrect premises and an unproved assumption

BMJ 2013; 346 doi: (Published 22 May 2013) Cite this as: BMJ 2013;346:f3120
  1. Richard Conrad Cottrell, director general1
  1. 1World Sugar Research Organisation, London SW1V 3LX, UK
  1. rcottrell{at}

In attempting to resurrect a long discarded “hormonal” theory of obesity, Taubes falls into a circular argument based on incorrect premises and an unproved assumption.1

The circularity rests in his claim that overconsumption of carbohydrate causes a hormonal response that leads to overconsumption of food energy, with overconsumption being a consequence of the hormonal response rather than its cause.

An axial, …

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