Effect of grape seed extract on blood pressure
The phenolic compounds found in grapes have shown to have a variety of positive effects on metabolic syndrome. Among them are the causing of endothelium-dependent relaxation of blood vessels and the activation of endothelial nitric oxide synthase (Sivaprakasapillai et al., 1). Endothelium-dependent relaxation is simply the relaxing of the flat cells that line internal body cavities, such as those in the heart. Once these cavities are relaxed, they allow for the opening of blood vessels. Endothelial nitric oxide synthase is important because it is the production and distribution of nitric oxide, which is an essential substance that acts to communicate within and between cells to regulate numerous processes in the body (MedLine Medical Dictionary).