Yes, erectile dysfunction can be an early warning sign of heart disease. Since ED often results from poor blood flow, it can indicate problems in the vascular system, including atherosclerosis (narrowing of the arteries). Men who experience ED—especially those with no clear psychological cause—should have their cardiovascular health evaluated. A healthy heart is crucial for strong erectile function, and catching cardiovascular problems early can save lives. ED is not just a sexual health issue but a potential marker of broader health concerns.