Eades on the Big Fat Lie
- From: Susan <susan@xxxxxxxxxxxx>
- Date: Sun, 23 Jan 2011 13:05:26 -0500
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http://www.proteinpower.com/drmike/lipid-hypothesis/the-big-lie/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed:+drmikenutritionblog+(The+Blog+of+Michael+R.+Eades,+M.D.)
"Nutritionally I can’t think of a bigger lie than the one claiming that fats in general and saturated fats in particular are bad for us. This lie is so deeply embedded in the minds of most that you couldn’t blow it out with a stick of dynamite. Especially in the minds of academics, and more especially in the minds of most dietitians. Not all, but most. Nutritionally, it is truly the Big Lie.
Despite the fact that they all tenaciously cling to the Big Lie, the evidence disputes it. But, “a lie told well is immortal.” Over at Whole Health Source Stephen Guyenet wrote a post recently looking at the observational data about saturated fat and cholesterol levels and heart disease. Most of the Big Lie devotees worry obsessively about saturated fat intake while the great mass of observational data shows little, if any, correlation. A couple of years ago, I wrote a long post about the invalidity of observational studies as proof of much anything, but in that post I neglected to mention that although observational studies can’t show that correlation equals causation, they probably are valid in demonstrating the opposite: if there is no correlation, there probably isn’t much of a case for causation. So, if there isn’t a lot of correlation between saturated fat intake and elevated cholesterol and/or heart disease, is doubtful that saturated fat intake is causal.
I just came across a paper – a research editorial, to be correct – in the Journal of the American Dietetic Association (JADA) that, did I not already have a close and abiding relationship with Jameson, would drive me to drink. In fact it probably did drive me to drink just a little more. Now the JADA is the journal edited by and written for Registered Dietitians, and, as a consequence, it has an RD feel to it in terms of content. It usually hews to the low-fat, high-carb party line, but every now and then it publishes a paper on some facet of low-carbohydrate dieting. The particular article that caused my heartburn is titled Low-Glycemic Load Diets: How Does the Evidence for Prevention of Disease Measure Up?..."
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