Which fatty acid assists in vessel dilation?

Linoleic acid is a polyunsaturated fatty acid that plays a significant role in the production of eicosanoids, which are signaling molecules that help regulate various physiological processes, including vascular function. These eicosanoids, specifically from the omega-6 family, can contribute to the vasodilatory effects by promoting relaxation of the vascular smooth muscle and aiding in the dilation of blood vessels. This action can enhance blood flow and reduce blood pressure, making linoleic acid beneficial for cardiovascular health.

While other fatty acids listed may have important roles in fatty acid metabolism and cellular functions, they do not have the same strong association with vessel dilation as linoleic acid does, particularly through its role in the production of endothelium-derived relaxing factors.