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Trans Fatty Acids and Coronary Heart Disease

Methodist Research Institute of Clarian Health Partners, Indiana University School of Medicine, and Department of Biology of Indiana University Purdue University at Indianapolis, Indianapolis, Indiana

Correspondence: Gary Zaloga, MD, Clintec Nutrition, One Baxter Parkway, Deerfield, IL 60015. Electronic mail may be sent to gary_zaloga{at}baxter.com.

Epidemiologic evidence has linked trans fatty acids (TFAs) in the diet to coronary heart disease in human populations. It has been estimated that dietary TFAs from partially hydrogenated oils may be responsible for between 30,000 and 100,000 premature coronary deaths per year in the United States. Although it is known that TFAs increase low-density lipoprotein (LDL) cholesterol levels and decrease high-density lipoprotein (HDL) cholesterol levels (markers of coronary heart disease), there is little known about the mechanisms by which TFAs actually function at the cellular level. It is unknown what levels of TFAs are clinically significant and it is unclear how TFAs are associated with cardiac arrhythmias or sudden cardiac death. We hypothesize that TFAs affect membrane structure, thus altering enzymatic pathways that may subsequently induce cardiac arrhythmias and sudden death.

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