Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Corn oil is sometimes used to help manage high triglyceride levels due to its fatty acid composition. It is high in polyunsaturated fatty acids (PUFAs), especially linoleic acid, and relatively low in saturated fats. Some clinical studies and dietary guidelines suggest that replacing saturated fats with polyunsaturated fats like those in corn oil can modestly reduce triglyceride levels and improve overall lipid profiles. For example, a 2018 meta-analysis in the Journal of Clinical Lipidology found that increased intake of PUFAs is associated with lower triglyceride levels compared to saturated fat intake.

However, the evidence specifically supporting corn oil, rather than PUFAs in general, is limited. Most research focuses on broader dietary patterns rather than isolated oils. Additionally, while corn oil may help lower triglycerides when used as a substitute for saturated fat, the effect is generally modest. Corn oil does not lower triglycerides as effectively as omega-3 fatty acids found in fish oil, which have much more robust clinical evidence for triglyceride lowering.

In summary, there is some scientific rationale and moderate evidence supporting corn oil’s use as part of a heart-healthy diet to help manage triglycerides, primarily when it replaces saturated fats. However, the effect size is modest and not specific to corn oil alone. Thus, the evidence rating is 2 out of 5.

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