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Prog Lipid Res. 2008 May;47(3):172-87. doi: 10.1016/j.plipres.2008.01.004. Epub 2008 Feb 15.

Dietary fatty acids and cardiovascular disease: an epidemiological approach.

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Department of Public Health, School of Public Health and Clinical Nutrition, University of Kuopio, Kuopio, Finland.


The quality of dietary fat in relation to cardiovascular disease forms the basis of the diet-heart hypothesis. Current recommendations on dietary fat now emphasise quality rather than quantity. The focus of this review is to summarise the results from prospective cohort studies on dietary fat and cardiovascular disease outcomes. Relatively few prospective cohort studies have found an association between dietary fat quality and cardiovascular disease, partly because of limitations in estimating dietary intake. Saturated and trans fatty acids have increased cardiovascular risk in several studies. Both n-6 and n-3 polyunsaturated fatty acids have been associated with lower cardiovascular risk. Within the n-6 series, linoleic acid seems to decrease cardiovascular risk. Within the n-3 series the long-chain fatty acids (eicosapentaenoic and docosahexaenoic acids) are associated with decreased risk for especially fatal coronary outcomes, whereas the role of alpha-linolenic acid is less clear. Dietary fat quality also influences the activity of enzymes involved in the desaturation of fatty acids in the body. Serum desaturase indices have been consistently associated with adverse cardiovascular outcomes. Data from metabolic and clinical studies reinforce findings from observational studies supporting recommendations to replace saturated and trans fat with unsaturated fat in the prevention of cardiovascular disease.

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