In the 1950's, a researcher named Ancel Keys decided that our country was in the middle of an epidemic. He believed that American's were suffering from cardiovascular disease and, in his mind, the culprit was dietary fat. His developed of the "lipid hypothesis" of chronic disease and set about on a crusade to prove his notion correct.
Unfortunately, the data he collected by testing the total cholesterol of men in dozens of different countries didn't back-up his theory. Unswayed, Ancel simply removed the data that didn't fit his hypothesis, interpreted his findings as "proof" and then engaged in a marketing campaign that culminated in a Time Magazine cover story. Keys' findings were then adopted by the 1977 McGovern Commission, against the will of the commissions board of doctors and scientists, culminating in the first set of national dietary recommendations.
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The red dots indicate the data Keys used to "prove" his correlation between fat intake and mortality. The black dots reflect populations that were not considered in Keys' study and when they are incorporated, the empirical support of the fat/cholesterol hypothesis of disease falls apart. (Image from Hyperlipid) |
As you can see from the below graph below, since the McGovern commission released it's findings in the mid 1970's, there has been a dramatic spike in the incidence of diabetes, heart disease and obesity in this country.
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From Gross et al 2004 (American Journal of Clinical Nutrition) |
While it may be easy to point the finger at fast food companies like McDonalds, the truth of the matter is that American's really did listen to the advice that they were given and reduced their fat intake, replacing fat calories with carbohydrates.
The average American, believing in the infallibility of "experts" is directed to eat more "good" carbohydrates like whole grain cereals, beans, and breads. They are told to avoid "fatty" foods and to eat "lean" meat. They then buy "low-fat" high carbohydrate foods, margarine and other "low cholesterol" oils, and as many "Now with more whole grain!" items as they can. They avoid rich, satisfying foods and instead eat copious amounts of craving-inducing refined carbohydrates.
Sadly, a low-fat high carbohydrate diet, as recommended by American Heart Association, the ADA, and by so-called nutrition "experts", is precisely the kind of diet that leads to the development of diabetes, heart disease, cancer, and every other form of chronic, auto-immune, and degenerative disease. An honest look at the actual scientific evidence is difficult to find and it is only through the courageous efforts by passionate informed individuals such as Gary Taubes, Tom Naughton, Sally Fallon, and Mary Enig that the truth has slowly been brought to light.
If you want to help bring the decades long war against dietary fat to an end, join our online petition. It only takes minute and the more of us who speak up, the greater the chances that we will be heard.
Dr. Weil is on board but dosen't quite get that carbs need to be treated like an addiction. The further into Paleo I get the less cravings and attraction to sweets I have. Yams and dark chocolate taste very sweet to me now. You couldn't pay me to eat cake or ice cream. Maybe I'm just lucky that I enjoy eating meat (not afraid of fat) veggies and some nuts and fruit. Or maybe I got off the gluten, casein and sugar (and alcohol!) and I'm on the other side of carb addiction. This is something you have to experience to understand, just how your metabolism changes as you get keto-adapted. A junkie isn't interested in giving up drugs and folks aren't keen on giving up the sweets and bread. Plus, there is a strong cultural factor involved with sweets as comfort food. How many times on TV or in a movie have you seen someone pig out and get to the bottom of a carton of Ben & Jerry's to feel better? Sugar comes pretty damn close to drugs and alcohol IMHO.
ReplyDeleteThanks for putting this together Tony.
Lots of great stuff! One small correction...the red dots on Hyperlipid's graph are not the dots that Keys used, but are points not in the original data, from the "Masai, Inuit, Rendale, Tokelau, and a few others". These peoples consumed prodigious amounts of fat and had some of the lowest death rates on the chart.
ReplyDeleteWalquis, thanks for the catch. I'll update to accurately reflect the data.
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