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For example, a person eating one doughnut for breakfast (3.2 g)50 and a large order of french fries for lunch (6.8 g)50 would ingest 10 g of trans fatty acids, or 5 percent of the total energy of an 1,800-calorie diet. Thus, simple labeling changes alone will not be sufficient. The following is a more detailed review of the scientific studies behind these conclusions: Effects on plasma lipids Studies in the 1960s compared the effects of partially hydrogenated fat with those of unhydrogenated vegetable oils constitution or saturated fats on the concentrations of total serum cholesterol. Overall, these constitution earlier constitution studies suggested that the cholesterol raising effect of hydrogenated fat was somewhat lower than that of saturated fats.1, 6 Only in 1990 was attention given to the fact that although trans fatty acids increase LDL cholesterol to a similar degree as saturated fat, they decrease HDL cholesterol relative to both cis unsaturated or saturated fats.3
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