Erectile dysfunction affects about 30 million American men — and it can be the earliest warning sign of cardiovascular disease. A Texas board-certified physician explains ED causes, the heart connection, and evidence-based treatment in 2026.
By Dr. Casey Dean, DO · Board-Certified Family Medicine Physician (ABFM) · Published 2026-06-17
Erectile dysfunction affects an estimated 30 million men in the United States — and roughly two-thirds of them never discuss it with a doctor. If you're reading this, you may already suspect something is off. What most men don't realize is that ED isn't just about sexual performance. It may be your body's earliest warning that something is happening inside your blood vessels — something that could affect your heart years before you ever feel chest pain.
As a family medicine physician, I consider erectile dysfunction one of the most underappreciated vital signs in men's health. Understanding what causes it, what it means, and what you can do about it could quite literally save your life.
Erectile dysfunction is the consistent inability to achieve or maintain an erection firm enough for satisfactory sexual activity. The key word is consistent. An occasional difficulty — after a stressful day, a few too many drinks, or when you're exhausted — is normal and happens to most men. ED becomes a medical concern when it's a recurring pattern over several weeks or months.
It depends on the cause. ED caused by a reversible factor — a medication side effect, performance anxiety, obesity, or a hormonal deficiency — can often be fully resolved with appropriate treatment. ED caused by progressive vascular disease may require ongoing management, but lifestyle changes and medication can significantly improve function in most men.
While ED becomes more common with age, it is not an inevitable consequence of getting older. Many men maintain healthy erectile function well into their 70s and beyond. Age-related ED is usually driven by underlying conditions (vascular disease, diabetes, medication use) that are treatable — not by aging itself.
PDE5 inhibitors like sildenafil can work within 30–60 minutes for most men and are the fastest pharmacological option. However, for long-term improvement, combining medication with lifestyle changes (regular exercise, healthy diet, weight management) produces the most durable results.
Yes. Psychological factors — including performance anxiety, work stress, depression, and relationship conflict — are the primary cause of ED in roughly 10–20% of cases and a contributing factor in many more. Stress activates the sympathetic nervous system, which counteracts the parasympathetic relaxation needed for erection. This is especially common in men under 40.
While direct-to-consumer telehealth platforms (like Hims or Roman) make ED medication easy to obtain, a prescription without a proper evaluation misses the point. ED can be the first sign of cardiovascular disease, diabetes, or hormonal deficiency. A family medicine physician will screen for these underlying conditions — not just write a prescription. The Princeton IV Consensus recommends cardiovascular risk assessment for all men with ED.
Not necessarily — but it means your risk is elevated. Research shows that men with ED have approximately twice the risk of a future cardiovascular event compared to men without ED. The younger you are when ED develops, the stronger the association. A cardiovascular evaluation can determine your actual risk and whether preventive measures are needed.