Does a vasectomy cause ED?
The short answer
No good evidence says it does. A vasectomy blocks the tubes that carry sperm, and reviews found no lasting change in testosterone. MedlinePlus says it does not affect a man's ability to have an erection, and large studies found ED no more common after the procedure. Lasting erection trouble deserves a check.
The short version: the fear that a vasectomy will cost a man his erections is one of the most common reasons men hesitate about the procedure, but the evidence does not support it. A vasectomy closes off the tubes that carry sperm. MedlinePlus, from the National Library of Medicine, states plainly that a vasectomy does not affect a man’s ability to have an erection or orgasm, and the largest studies found ED no more common, and in one case less common, in men who had the procedure. This page sets out what the studies found, where their limits sit, and why a few men still notice changes.
| Claim | What the evidence shows |
|---|---|
| A vasectomy damages erections | MedlinePlus says it does not affect erection, orgasm or ejaculation; large surveys found no higher rate of ED |
| A vasectomy lowers testosterone | Reviews of human and animal studies found no lasting change in reproductive hormones |
| Sex will never feel the same | NHS says there is no evidence of an effect on long-term sexual performance or enjoyment |
| Nothing at all can change afterward | Short-term soreness is common, and a small share of men have lasting scrotal pain |
| Worry about the procedure cannot matter | Reviews note that anxiety, including about the operation, can affect erections in some men |
What is the claim?
The claim is that a vasectomy, because it is surgery in the genital area, can weaken erections or cause ED. Researchers in Germany wrote that fear of altered sexual function is still linked to vasectomy by many men, and that the link between genital surgery and erections feels intuitive to the public even though the main risk factors for ED lie elsewhere (Jahnen et al., Andrology, 2025). This page is part of our library of ED myths checked against the evidence, where each claim is set against what studies and agencies actually say.
The procedure itself explains why the worry does not hold up well. A vasectomy cuts and closes the vas deferens, the tubes that carry sperm from the testicles, so sperm can no longer reach the semen (MedlinePlus, Vasectomy). NHS describes it as a procedure that stops sperm being ejaculated, usually done under local anaesthetic in around 30 minutes (NHS, What is a vasectomy?).
What do medical sources say about vasectomy and erections?
They say a vasectomy does not affect erections. MedlinePlus states that a vasectomy does not affect a man’s ability to have an erection or orgasm, or to ejaculate semen, and that it does not raise the risk of prostate cancer or testicular disease (MedlinePlus, Vasectomy). NHS says there is no evidence that having a vasectomy affects long-term sexual performance or enjoyment (NHS, Recovering after a vasectomy).
Neither source makes this a promise about any one man. They describe what is known across men who have had the procedure, which is the right way to read any general health statement.
What do large studies show about vasectomy and ED?
The largest studies found ED no more common in men who had had a vasectomy. In a German study of 5,425 men aged about 50, ED was less common in the 679 men who had had a vasectomy (about 12% versus 20%), and vasectomy stayed linked to lower odds of ED after accounting for smoking, activity, waist size and other health factors (Jahnen et al., Andrology, 2025). Those men were also more likely to be sexually active and satisfied.
An Australian telephone survey of 3,390 men found that men with a vasectomy were slightly more likely to report trouble keeping an erection (10.8% versus 8.2%), but the difference disappeared once age and other background factors were taken into account. Vasectomy was not linked to any specific sexual problem (Smith et al., J Sex Med, 2010).
A smaller Brazilian study measured 64 men with a standard erectile function questionnaire before and 90 days after the procedure. Overall scores rose slightly, and the authors reported no case of ED caused by the surgery (Bertero et al., Int Braz J Urol, 2005).
| Study | Who was studied | What it found about erections |
|---|---|---|
| Jahnen et al., 2025 | 5,425 German men around age 50 | ED less common in men with a vasectomy |
| Smith et al., 2010 | 3,390 Australian men | Small raw difference that disappeared after adjusting for age and background |
| Bertero et al., 2005 | 64 Brazilian men, before and after | No surgery-related ED; overall scores rose slightly |
| Helm et al., 2025 review | 9 papers on erectile function (1,800 men) | 6 found no change, 3 found improvement |
What do the reviews add?
Reviews that gathered the published studies reached the same general answer. A systematic review that found nine papers measuring erectile function in 1,800 men reported that six showed no change and three showed improvement after vasectomy, and concluded that most areas of sexual function were unaffected or improved (Helm et al., Transl Androl Urol, 2025). A review of vasectomy complications listed sexual dysfunction and changes in reproductive hormones among the concerns with no increased risk (Yang et al., World J Mens Health, 2021).
A second systematic review, of 11 studies, reported studies showing improved scores after vasectomy. It added two caveats: one study linked low acceptance of the vasectomy to ED, and the review said rare complications can be linked to reduced sexual function, which is why counseling before the procedure matters (Wicaksono et al., Arch Ital Urol Androl, 2025).
Does a vasectomy lower testosterone?
The evidence says no lasting change. The vasectomy complications review noted that early animal studies showed a brief dip in testosterone after the procedure, concluded that reproductive hormones return to normal, and said vasectomy does not raise the risk of late-onset low testosterone. One survey it described, of 485 men with a vasectomy and 1,940 without, found no difference in free testosterone, though total testosterone did differ between the groups (Yang et al., World J Mens Health, 2021). The German authors likewise noted that testosterone production is not altered after a vasectomy (Jahnen et al., Andrology, 2025).
Why might some men notice changes?
A few real things can happen, and none of them is the vasectomy damaging the erection itself. Right after the procedure, NHS says testicle pain and swelling for around a week is common, and getting an erection may feel painful at first, with some blood in the semen; these should quickly pass (NHS, Recovering after a vasectomy).
Less often, pain lasts. NHS describes long-term testicular pain, called post-vasectomy pain syndrome, as an uncommon side effect (NHS, Complications of a vasectomy). The complications review reported chronic pain after 1% to 15% of vasectomies, with only about 1% to 2% of men saying it affected their quality of life (Yang et al., World J Mens Health, 2021). Ongoing pain is worth raising with the clinician who did the procedure.
The mind matters too. The same review noted a report of more depression and anxiety symptoms in some men after vasectomy, and explained that stress and fear can work against an erection (Yang et al., World J Mens Health, 2021). If that pattern sounds familiar, our guide to telling ED and performance anxiety apart walks through how the two differ.
Timing can also mislead. In the German study the average age at the procedure was about 41 (Jahnen et al., Andrology, 2025). Erection problems become more common with age and with conditions such as diabetes, high blood pressure and heart disease (MedlinePlus, Erection problems), so a change that shows up years later may have nothing to do with the procedure.
Why might men with a vasectomy report fewer erection problems?
The studies cannot say for sure. The German researchers suggested that removing the worry about an unplanned pregnancy, and no longer needing other birth control, might ease anxiety during sex (Jahnen et al., Andrology, 2025). They also named the main limits of their own work: it looked back in time, had no measurements from before the vasectomy, and men who already had serious erection trouble may have been less likely to choose the procedure. A link in a survey like this does not show that a vasectomy improves erections. Our guide to reading ED research explains why that distinction matters.
What actually causes ED?
ED can come from something affecting blood vessels, nerves or hormones, from medicines, or from mental and emotional factors. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) lists diabetes, heart and blood vessel disease, high blood pressure, low testosterone, nerve damage (including from pelvic surgery), enlarged prostate and Peyronie’s disease; many common medicines; anxiety, depression and stress; and lifestyle factors such as smoking, heavy drinking and inactivity. Vasectomy is not on that list (NIDDK, Symptoms and Causes of ED). Blaming the procedure can mean missing one of those causes. MedlinePlus notes that ED may be a sign of health problems such as diabetes or heart disease (MedlinePlus, Erection problems).
When is it worth getting checked?
Erection trouble that keeps happening is worth a conversation with a clinician, whether or not you have had a vasectomy. MedlinePlus advises contacting a provider if the problem does not go away with lifestyle changes, if it starts after an injury or prostate surgery, or if it comes with other symptoms such as low back pain, abdominal pain or a change in urination. It also notes that erections in the morning or during sleep make a physical cause less likely (MedlinePlus, Erection problems).
After a vasectomy, NHS advises an urgent appointment if scrotal pain and swelling suddenly get worse or do not start to improve after a few days, if you have a high temperature, if blood or pus leaks from the wound, or if a lump in the scrotum keeps growing (NHS, Complications of a vasectomy). For ongoing erection concerns, a urologist or your primary care clinician is a reasonable place to start; our guide to which doctor treats ED explains the options, and our page on whether masturbation causes ED covers another common worry.
Sources
- MedlinePlus, Vasectomy, reviewed January 2026: what the procedure does; no effect on erection, orgasm or ejaculation; no increased risk of prostate cancer or testicular disease.
- NHS, Recovering after a vasectomy, last reviewed February 2024: short-term pain, painful erections at first, and no evidence of an effect on long-term sexual performance or enjoyment.
- NHS, Complications of a vasectomy, last reviewed February 2024: side effects, post-vasectomy pain syndrome, and when to seek urgent advice.
- NHS, What is a vasectomy?, last reviewed February 2024: how the procedure works.
- Jahnen M, Rechberger A, Meissner VH, et al. Associations of vasectomy with sexual dysfunctions and the sex life of middle-aged men. Andrology. 2025;13(4):665-674: 5,425 men around age 50; lower ED prevalence in men with a vasectomy; stated limitations.
- Smith A, Lyons A, Ferris J, et al. Are sexual problems more common in men who have had a vasectomy? A population-based study of Australian men. J Sex Med. 2010;7(2 Pt 1):736-742: 3,390 men; no difference after adjustment.
- Bertero E, Hallak J, Gromatzky C, Lucon AM, Arap S. Assessment of sexual function in patients undergoing vasectomy using the international index of erectile function. Int Braz J Urol. 2005;31(5):452-458: 64 men assessed before and after.
- Helm M, Pipinos M, Glassman J, Albers G, Deibert CM. A systematic review evaluating the effects of vasectomy on male and female sexual function and satisfaction. Transl Androl Urol. 2025;14(12):4002-4011: erectile function unchanged or improved across the included papers.
- Wicaksono MH, Sugianto R, Duarsa GWK. Sexual outcome of vasectomized patients: a systematic review. Arch Ital Urol Androl. 2025;97(2):13644: 11 studies; improved scores reported, with caveats about low acceptance and rare complications.
- Yang F, Li J, Dong L, et al. Review of Vasectomy Complications and Safety Concerns. World J Mens Health. 2021;39(3):406-418: chronic pain rates, hormones (including the 485-man survey), sexual function and psychological factors.
- NIDDK, Symptoms and Causes of Erectile Dysfunction, last reviewed October 2024: the list of ED causes.
- MedlinePlus, Erection problems, reviewed October 2025: when to contact a provider, and morning and nighttime erections.
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