Is erectile dysfunction a sign of heart disease?

Erectile dysfunction in men under 60 is a cardiovascular sentinel event: the penile arteries (1–2 mm diameter) are smaller than coronary arteries (3–4 mm), so endothelial dysfunction and atherosclerosis manifest there first, producing ED on average 3–5 years before the same pathology causes angina or a heart attack, making new-onset ED in a man under 60 an indication for complete cardiovascular risk assessment, not simply a PDE5 inhibitor prescription (Montorsi et al., Circulation, 2005).

This is one of the most clinically important and most underutilized pieces of cardiovascular medicine. The man who receives a Viagra prescription without a cardiovascular workup has a new tool for a symptom and no information about the underlying vascular disease driving it. In my cardiology practice, new-onset ED in a man under 60 triggers an evaluation: ApoB, hs-CRP, fasting insulin, blood pressure assessment, and a discussion about whether a calcium score CT is appropriate. This is not overreaction, it is acting on one of the strongest harbinger signals in cardiovascular medicine.

Honesty Scale: Solid (1). The ED-as-cardiovascular-harbinger evidence base includes multiple large prospective studies and meta-analyses.

What to do: If you are under 60 and have new-onset ED, request a cardiovascular evaluation, not just a PDE5 inhibitor prescription. Ask your physician: "Is there anything about my cardiovascular health that I should know about?" If the answer is "you seem fine, here's a prescription" without any laboratory work, seek a second opinion from a cardiologist.

For the full picture, read The Stamina Deep Dive