What is erectile dysfunction?

Dr Luke Powles
Associate Clinical Director, Health Clinics Bupa Global and UK
03 February 2026
Next review due February 2029

Erectile dysfunction (ED), also known as impotence, is when you have problems getting or keeping an erection. This is not unusual, but it can affect your sex life as well as your confidence. Here I talk about why this may happen, and what you can do to manage it.

man looking out of a window

What causes erectile dysfunction (ED)?

There are many reasons why you might have trouble getting an erection during sex.

While erectile dysfunction becomes more common as you get older, it can happen at any age. Erection problems may be linked to low testosterone levels or conditions such as high blood pressure, which can reduce blood flow to the penis. ED could also be a side effect following surgery on your pelvic area. Other things putting you at risk of ED are:

  • being obese
  • drinking heavily
  • smoking
  • drug misuse

ED could also be linked to your mental health. Stress, depression, and anxiety can make it harder for you to get an erection. Similarly, you might experience ED if you aren’t able to feel aroused or have problems with intimacy. And having poor sleep may also cause ED.

While exercise is good for encouraging blood flow to the penis, cycling more than three hours a week has also been linked to ED. This may be because sitting on a saddle can cause nerve damage. But more research is needed to confirm this.

What is the treatment for erectile dysfunction?

If you are worried about erectile dysfunction (ED), don’t feel embarrassed to seek help. A doctor can help you and your partner find out what’s going on. They’ll ask about your medical history to see if your ED is linked to diabetes, cardiovascular disease, or low hormone levels. They may need to do tests to confirm this. They will also ask about any relationship or emotional problems.

They may give you advice on your lifestyle to help your ED or conditions linked to ED such as:

If you cycle more than three hours a week, you might be advised to stop for a while to see if this helps with getting erections. However, if you’d rather not stop cycling, it might help to get a properly fitted seat or change the position you sit on the seat.

If your ED is not related to a physical issue it may be because of psychological reasons, for example stress, anxiety or depression. If so, your doctor will advise that you visit a mental health service such as psychosexual therapy or counselling.

Can erectile dysfunction (ED) be cured with medication?

To treat erectile dysfunction (ED), your doctor can prescribe medicine to help you get an erection. One medicine you might have heard of is Viagra (sildenafil). This is a type of medicine called a PDE-5 inhibitor. You can get Viagra without a prescription. However, for other PDE-5 inhibitors, you’ll need a prescription. You should follow your doctor’s advice on which PDE-5 inhibitor is best for your ED.

You will take these pills before you have sex. Depending on which one you’re taking, it can take at least 15 to 30 minutes to take effect.

Your ED is most likely to get better by both lifestyle changes such as reducing smoking and drinking as well as drug treatment. Remember that ED is not an unusual problem, and by talking to a doctor you can help both you and your partner.


Help with sexual function

Address the root cause of common problems like erectile dysfunction, loss of libido and premature ejaculation.

Dr Luke Powles
Dr Luke Powles
Associate Clinical Director, Health Clinics Bupa Global and UK

 

Co-author

Julia Ebbens, Health Content Editor at Bupa UK

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    • Erectile dysfunction. NICE Clinical Knowledge Summaries. cks.nice.org.uk, last revised July 2020
    • Erectile dysfunction. BMJ Best Practice. bestpractice.bmj.com, last reviewed December 2022
    • Erectile dysfunction. Oxford Handbook of General Practice (5 ed online). Oxford Academic. academic.oup.com, published June 2020
    • Personal communication Dr Luke Powles. Clinical Director Clinical Director, Health Clinics Bupa Global and UK, February 2023
    • Sildenafil. British National Formulary. bnf.nice.org.uk, last accessed January 2023
    • Tadalafil. British National Formulary. bnf.nice.org.uk, last accessed January 2023
    • Vardenafil. British National Formulary. bnf.nice.org.uk, last accessed January 2023
    • Avanafil. British National Formulary. bnf.nice.org.uk, last accessed January 2023

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