The Massachusetts Male Aging Study found that ED affects about 40% of men at age 40, increasing to nearly 70% by age 70.[1] But here’s what the headline number misses: ED in a 30-year-old and ED in a 55-year-old are often completely different conditions with different causes and different optimal treatments.

ED in Your 20s and 30s: Mostly Above the Waist

Studies show that about 25% of new ED diagnoses are in men under 40.[4] In younger men, the cause is predominantly psychogenic—meaning it originates in the brain, not the blood vessels:

Best Approaches for Younger Men

Since the cause is usually psychological, the most effective treatments address the root cause:

ED at 50+: Usually Below the Belt

In older men, ED is predominantly organic—caused by physical changes in blood vessels, nerves, and hormones:[2]

Best Approaches for Older Men

The Cardiovascular Connection

For men over 40, ED often appears 3–5 years before a heart attack or stroke. The penile arteries are smaller than coronary arteries, so they clog first. ED in this age group should always prompt cardiovascular screening.[2]

The right treatment depends on the cause. A telehealth provider can help identify whether your ED is likely psychological, vascular, hormonal, or a combination.

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The Bottom Line

Age doesn’t just change the likelihood of ED—it changes the cause. Younger men often benefit most from psychological support plus a confidence-building PDE5 inhibitor. Older men typically need a systematic medical approach that addresses vascular health, hormones, and may require escalating through multiple treatment tiers. Knowing the difference is the first step toward the right solution.