Erectile dysfunction is extremely common. An estimated 322 million men worldwide experience it as of 2025, more than double the 152 million estimated in 1995. The condition affects men of every age, though prevalence rises sharply with each decade of life. If you’re dealing with it, you’re far from alone.
Prevalence by Age
ED affects 5% to 10% of men under 40. That number climbs steadily from there. By their 40s, roughly 40% of men experience some degree of difficulty with erections. By their 60s, the majority of men are affected. Among men in their 70s and beyond, ED is more the rule than the exception.
The pattern is consistent across countries and populations: for every decade of life after 40, the prevalence jumps by roughly 10 percentage points. This doesn’t mean age causes ED directly. Rather, the health conditions that accumulate over time, such as high blood pressure, narrowing of blood vessels, and metabolic changes, are what drive the increase.
ED in Younger Men
While less common under 40, that 5% to 10% range still represents millions of men globally. The causes in younger men often look different from those in older men. Performance anxiety and psychological stress play a larger role. So do certain lifestyle factors that might surprise you: a disproportionate number of young men with erectile difficulties have a history of bicycling injuries, which can compress nerves and blood vessels in the pelvic area.
Younger men are also more likely to experience situational ED, meaning it happens in some circumstances but not others. This pattern typically points to psychological rather than physical causes and tends to respond well to treatment.
Severity Ranges Widely
Not all ED is the same. Doctors use a five-question screening tool that scores erectile function on a scale from 5 to 25. A score of 22 to 25 is considered normal. Below that, the condition breaks down into distinct categories: mild (17 to 21), mild to moderate (12 to 16), moderate (8 to 11), and severe (5 to 7).
Most men with ED fall into the mild or mild-to-moderate range. They can still get erections, but not as reliably or as firm as they once could. Severe ED, where erections are rare or absent entirely, affects a smaller subset. This distinction matters because mild ED often responds to lifestyle changes alone, while more severe cases typically need additional help.
The Link to Heart Disease and Diabetes
ED and cardiovascular disease share the same underlying mechanism: damaged or narrowed blood vessels. An erection depends on strong blood flow into the penis, so the small arteries there are often the first place vascular problems show up, sometimes years before a heart attack or stroke.
In one large study of over 2,300 men with type 2 diabetes, more than one in four already had ED at the start of the study. Those men went on to have higher rates of coronary heart disease during follow-up. For this reason, many cardiologists now view ED as an early warning signal for cardiovascular trouble, particularly in men under 60 who don’t have other obvious risk factors.
The relationship works in both directions. Conditions that damage blood vessels, including diabetes, high blood pressure, and high cholesterol, make ED more likely. And ED itself can be the first visible sign that those conditions are developing silently.
Smoking, Weight, and Other Risk Factors
Smoking significantly increases your risk. Current smokers are about 70% more likely to develop ED than men who have never smoked. Former smokers carry a similar elevated risk, roughly 60% higher than never-smokers. The effect is strongest in men who are otherwise healthy. Among men who already have cardiovascular disease or diabetes, smoking doesn’t add much additional ED risk on top of what those conditions already cause, because the vascular damage is already extensive.
Obesity, physical inactivity, and heavy alcohol use all contribute as well. Excess body fat disrupts hormone levels, reduces blood flow, and promotes inflammation, all of which interfere with erections. Regular physical activity is one of the most consistently supported protective factors in the research. Even moderate exercise, such as brisk walking for 30 minutes most days, is associated with meaningfully lower rates of ED.
Most Men Don’t Seek Treatment
Despite how common ED is, the majority of men who experience it never bring it up with a doctor. Estimates suggest that fewer than 25% of men with ED receive any form of medical treatment. Embarrassment is the most cited barrier, followed by the assumption that it’s a normal part of aging that can’t be changed.
That assumption is wrong. Oral medications work for roughly 70% of men who try them. For those who don’t respond, other options exist, including vacuum devices, injections, and implants. Beyond specific treatments, addressing the underlying cause, whether that’s poorly controlled blood sugar, a medication side effect, or untreated anxiety, often improves erectile function on its own.
The global numbers tell a clear story: ED affected an estimated 152 million men in 1995 and roughly 322 million by 2025. That increase of 170 million reflects aging populations, rising rates of obesity and diabetes, and greater willingness to report the condition. The actual number is almost certainly higher, given how many men never disclose it.