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What is the effect of dietary intake of n-6 polyunsaturated fatty acids (PUFA) on increased risk of cardiovascular disease and type 2 diabetes, including intermediate markers such as lipid and lipoprotein levels and inflammation? (DGAC 2010)

Conclusion

Strong and consistent evidence indicates that dietary n-6 polyunsaturated fatty acids (PUFA) are associated with improved blood lipids related to cardiovascular disease (CVD), in particular when PUFA is a replacement for dietary saturated fatty acids (SFA) or trans fatty acids. Evidence shows that energy replacement of SFA with PUFA decreases total cholesterol, LDL cholesterol and triglycerides, as well as numerous markers of inflammation. Polunsaturated fatty acid intake significantly decreases risk of CVD and has also been shown to decrease the risk of type 2 diabetes.

Grade

Strong
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Evidence Summaries

What is the evidence that supports this conclusion? For more information, click on the Evidence Summary link below.
 
What is the effect of dietary PUFA intake on health and intermediate health outcomes?

Research Recommendations

Determine the benefits and risks of MUFA vs. PUFA as an isocaloric substitute for SFA. Determine the mechanism by which dietary PUFA improve serum lipids, glucose metabolism, insulin levels, HOMA scores, inflammatory markers and blood pressure in both healthy persons and in persons with T2D.

Search Plan and Results

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MUFA and n-6 PUFA Intake and Health