Monday, May 17, 2010

Sat Fat is just Phat

Someone informed me recently that my last post might have been mistaken and that saturated fat is still considered the boogeyman of fats. I'm willing to concede that the science isn't settled, but I'd like to point out a couple of things from the wiki sat fat page (yes, take it for what it is worth):

A 3-year study conducted of 235 postmenopausal women with established coronary artery disease, many also having metabolic syndrome concluded that "in postmenopausal women with relatively low total fat intake, a greater saturated fat intake is associated with less progression of coronary atherosclerosis." Nevertheless, the authors deemed that "the findings do not establish causality." [41][42]

A 2010 meta-analysis in the American Journal of Clinical Nutrition looked at 21 unique studies containing over 350,000 people. They found no association between saturated fat and an increased risk for coronary heart disease, stroke, or cardiovascular disease.[17]

A study of 297 Portuguese males with acute myocardial infarction (MI), found that "total fat intake, lauric acid, palmitic acid [two common saturated fats] and oleic acid [a monoinsaturated fat] were inversely associated with acute MI" and concluded that "low intake of total fat and lauric acid from dairy products was related to acute MI". The authors suggest that "recommendations on fatty acid intake should aim for both an upper and lower limit".[43]

Fulani of northern Nigeria get around 25% of energy from saturated fat, yet their lipid profile is indicative of a low risk of cardiovascular disease. This finding is likely due to their high activity level and their low total energy intake.[44]

A 2004 article in The American Journal of Clinical Nutrition raised the possibility that the supposed causal relationship between saturated fats and heart disease may actually be a statistical bias. The authors take the example of the "Finnish mental hospital study" in which saturated fat intakes were monitored more closely than were total fat intakes, therefore ignoring the possibility that simply a larger fat intake may lead to a higher risk of coronary diseases. It also suggests that other parameters were overlooked, such as carbohydrates intakes.[45]

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