Monday, September 26, 2011

The Dietary Source of Body Fat

Over on Stephan Guyenet's blog, in the comment section of his post on Humans on a Cafeteria Diet, a little discussion was started by one disgruntled reader (or I suppose ex-reader since this post apparently pushed him over the edge to unsubscribe) regarding where the fatty acids in our body fat came from.   Stephan wrote:  
When a diet of mixed macronutrient composition is eaten to excess, the carbohydrate is preferentially burned off, while the fat is mostly shunted into fat tissue. This makes sense, because why would the body go through the inefficient process of converting carbohydrate to fat for storage when it can just shunt dietary fat directly into fat tissue?
Said reader commented:  "This post has good info, but suggesting the fat is stored as fat is absolutely wrong and is bad science."    A discussion, contributed to by yours truly, ensued.  I think this is illustrative of just how damaging towards ultimate progress in the realm of understanding, preventing and treating obesity Gary Taubes has been.   On page 387 (according to Google books, my ebook page numbers are off) of GCBC, Taubes writes:
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