Friday, July 29, 2011

Fructophobia, by Richard David Feinman

 A great new article on whether singling out Fructose for demonization is justified:
Richard David FeinmanWhat went wrong in the obesity epidemic?  There is some agreement that by focussing on fat, the nutritional establishment gave people license to over-consume carbohydrates. The new threat is that by focusing now on fructose, the AHA and USDA and other organizations are giving implicit license to over-consume starch — almost guaranteed since these agencies are still down on fat and protein.  The additional threat is that by creating an environment of fructophobia, the only research on fructose that will be funded are studies at high levels of carbohydrate where deleterious of the effects of fructose will be found. The results will be br generalized to all conditions.  There will be no null hypothesis....The extent to which fructose metabolism has a uniquely detrimental effect is strongly dependent on conditions.  Fructose may be worse than glucose under conditions of high carbohydrate intake but its effect will change as total carbohydrate is lowered. And since carbohydrate across the board is what is understood to be the problem — Lustig states that clearly in his YouTube — policy would suggest that that is the first line of attack on health — reduce carbohydrate (emphasizing fructose if you like) but as carbohydrate and calories are reduced, any effect of fructose will be minimized.  In the extreme, if you are on a very low carbohydrate diet, any fructose you do eat is likely to be turned in to glucose.

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