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Lecture-style YouTube video by Anne Truong MD (uploaded Nov 11, 2022) explaining how cardiovascular factors—specifically high blood pressure and inflammation from gum disease—impair endothelial function. The endothelium normally produces nitric oxide, which relaxes vascular smooth muscle and supports blood flow; loss of endothelial function (from inflammation or decreased elasticity due to hypertension) can contribute to erectile dysfunction by reducing nitric-oxide–mediated vasodilation.










