No, not every man gets erectile dysfunction. But it is remarkably common, and the odds increase with each decade of life. At age 40, about 40% of men experience some degree of difficulty with erections. By age 70, that number climbs to roughly 67%. Even so, a significant portion of men maintain healthy erectile function well into their 70s and beyond, which means ED is not an unavoidable part of aging.
What makes the topic confusing is that “erectile dysfunction” covers a wide spectrum. A man who occasionally has trouble getting an erection after a stressful week is in a very different situation than someone who hasn’t been able to get one in months. Understanding what drives ED, and what’s modifiable, can change the outlook considerably.
How Common ED Is at Every Age
ED affects men across the entire adult lifespan, though the rates vary dramatically. Among men under 40, roughly 5% to 10% experience it. That number is lower than many people assume, but it’s not negligible, particularly since younger men are less likely to seek help.
The most comprehensive data comes from the Massachusetts Male Aging Study, which tracked men between ages 40 and 70. In that group, about 10% had severe, complete erectile dysfunction, while an additional 25% had moderate or intermittent difficulty. Combined, the prevalence of moderate to complete ED rose from 22% at age 40 to 49% by age 70.
The Baltimore Longitudinal Study of Aging paints a similar picture at the older end: 25% of 65-year-olds, 55% of 75-year-olds, and 75% of 80-year-olds reported some degree of erectile impairment. Those are high numbers, but flip them around and they tell a different story. One in four men at age 80 reported no significant erectile problems at all.
What Actually Happens During an Erection
An erection is primarily a blood-flow event. When a man becomes aroused, parasympathetic nerves trigger the release of a signaling molecule called nitric oxide inside the penile tissue. Nitric oxide sets off a chain reaction that relaxes the smooth muscle lining the arteries and spongy chambers of the penis. Those arteries dilate, increasing blood flow by 20 to 40 times the resting state. As the chambers fill, they compress the veins that would normally drain blood away, trapping it inside and creating rigidity.
Anything that disrupts this process, whether it’s nerve damage, restricted blood flow, hormonal shifts, or psychological interference, can cause erectile difficulty. That’s why ED has so many possible causes and why it often reflects what’s happening elsewhere in the body.
The Biggest Physical Risk Factors
Cardiovascular health is the single strongest predictor of erectile function. The arteries supplying the penis are smaller than the ones feeding the heart, so they tend to show damage from high blood pressure, high cholesterol, and arterial stiffness earlier. Research shows that ED can appear two to four years before a major cardiovascular event like a heart attack. For this reason, new-onset ED in a man over 40 is sometimes treated as an early warning sign for heart disease.
Diabetes is another major contributor. Men with diabetes develop ED at three times the rate of the general population (28% vs. about 10%), and it tends to start earlier. Roughly 15% of diabetic men experience it by age 30, rising to 55% by age 60. Chronically elevated blood sugar damages both the small blood vessels and the nerves involved in erections.
Low testosterone plays a role as well, though it’s less straightforward than many men believe. The American Urological Association uses a total testosterone level below 300 ng/dL as the diagnostic threshold. Below that level, men often notice reduced desire in addition to erectile difficulty. But testosterone alone doesn’t explain most cases of ED. Many men with normal testosterone levels still experience it, and many men with low testosterone maintain erections just fine.
Medications That Contribute
Several widely prescribed drug classes can cause or worsen erectile problems. Blood pressure medications are among the most common culprits. Thiazide diuretics (water pills) are the most frequent offenders in this category, followed by beta-blockers. If you started a new blood pressure medication and noticed changes in erectile function, the timing is probably not a coincidence.
Antidepressants are another well-known cause, particularly SSRIs like fluoxetine and sertraline. These medications affect serotonin signaling in ways that can dampen arousal and delay or prevent erections. Anti-anxiety medications, including several benzodiazepines, carry similar risks. The frustrating irony is that depression and anxiety themselves also cause ED, making it harder to tell whether the condition or the treatment is responsible.
When the Cause Is Psychological
Not all ED starts with blood vessels or hormones. Performance anxiety, stress, depression, and relationship conflict can all interfere with arousal. Psychological ED tends to look different from the physical kind in a few key ways. Men with psychologically driven ED typically still get erections during sleep or upon waking. They may have no trouble with erections during masturbation but lose them with a partner, or the problem may be limited to specific situations or relationships.
The challenge is that psychological and physical causes often overlap and reinforce each other. A man who experiences a physical erection difficulty once or twice may develop anxiety about it happening again, and that anxiety itself becomes a barrier. Over time, what started as an occasional physical issue can become a persistent psychological one. Feelings of shame and fear of inadequacy tend to make the cycle worse, not better.
ED Can Often Be Improved or Reversed
One of the most important things to understand is that ED is frequently modifiable. Lifestyle changes alone can produce measurable results. A 2023 meta-analysis in The Journal of Sexual Medicine found that aerobic exercise improved erectile function scores by an average of 2.8 points on the standard 30-point clinical scale. The benefit was largest for men who started with the worst symptoms: those with severe ED saw improvements of nearly 5 points. That’s enough to shift someone from one severity category to a milder one.
The type of exercise matters less than consistency. Walking, cycling, swimming, and jogging all showed benefits. The mechanism is straightforward: aerobic exercise improves cardiovascular health, lowers blood pressure, reduces inflammation, and enhances the nitric oxide signaling pathway that erections depend on.
Weight loss in overweight men, better blood sugar control in diabetic men, quitting smoking, and reducing alcohol intake all independently improve erectile function. For men whose ED is linked to a specific medication, switching to an alternative with a different mechanism often resolves the problem. And for psychological ED, cognitive behavioral therapy and couples therapy have strong track records, particularly when combined with addressing any underlying depression or anxiety.
What the Numbers Really Mean for You
The statistics can sound alarming in isolation. But the headline number, that roughly two-thirds of men experience some degree of erectile difficulty by age 70, includes the full spectrum from occasional, mild difficulty to complete inability. Many men counted in those figures experience only intermittent issues that don’t significantly affect their sex lives.
The men who maintain strong erectile function into older age tend to share a few characteristics: they stay physically active, maintain a healthy weight, manage conditions like blood pressure and blood sugar effectively, and avoid or limit smoking. None of that guarantees anything, but it meaningfully shifts the odds. ED is common, age-related changes in erectile function are normal, but complete erectile dysfunction is not something every man will face.