Monday, January 10, 2011

Three Whole-Grain Portions Daily May Lower Cardiovascular Risk

    This one's a beaut.

" Daily consumption of 3 portions of whole-grain foods (WGF) is linked to lower cardiovascular disease (CVD) risk in healthy, middle-aged people mainly by lowering blood pressure (BP), according to the results of a randomized controlled dietary trial reported in the American Journal of Clinical Nutrition. (Am J Clin Nutr. 2010;92:733-740)

Given the role that fiber plays in slowing down the digestion of carbohydrates, everything these folk found can be explained by lowered blood glucose levels. Here's where it gets really entertaining:

"Although the mechanisms by which WGFs decrease BP remain unclear, our findings have important public health implications and provide a sound scientific basis for advising the daily consumption of 3 servings of WGF to combat CVD."

In fact, what they found was a statistical clue to do some science. They admit that the science eludes them and they can't figure out why WGF loading would lower BP.  Nor do they seem disposed to look for the science or consider the possibility that their assumptions are flawed.
    Another indicator of the shortage of three-digit IQs in the nutritional sciences.