Effects of prostate cancer treatment

Treatment for prostate cancer can cause a variety of side effects which can affect your mind, your body and your relationships. All of this can impact your sex life, some more than others. Your side effects may be different to the ones listed here and the type of treatment you have will also affect your side effects, and the impact on your sex life.

You may not feel like sex at all while you are having your treatment, or for some time after you are diagnosed. Many people feel very low after they have been told they have cancer and don’t feel interested in sex. But some people react to their diagnosis by feeling they should be packing as much into life as possible. If you feel like this, and treatment has caused erection problems, this may be hard to bear.

Whatever happens at first, remember that things will change. To see how your sex life will be affected, you will need to wait until at least the end of your treatment. And it is best to wait until you are feeling more back to normal.

Some of the side effects listed here are temporary – for example, tiredness and diarrhoea due to radiotherapy will wear off some weeks after your treatment has finished.

The Prostate Cancer UK website has information for gay and bisexual men about side effects of treatment.

You cannot pass the cancer to a partner

Cancer is not contagious. You will not pass cancer on to your partner during sex.

Side effects

Diarrhoea

Some men get diarrhoea during radiotherapy and for some time afterwards. This can be unpleasant and tiring and may put you off wanting to have sex. However, it will gradually go back to normal after a few weeks.

Tiredness

You may feel too tired to want sex for some time after prostate cancer treatment. There is information about coping with tiredness in the section about coping with prostate cancer.

Leakage of urine

If you have leakage of urine (incontinence) or a catheter into your bladder, you may feel embarrassed and that may put you off sex. You can get help with urine leakage from your specialist nurse.

Less interest in sex

Prostate cancer and its treatment can affect your libido (your desire for sex.) Hormone therapy for prostate cancer reduces your sex drive so you may have less interest in sex. This is because of the drop in testosterone – the hormone responsible for giving you a sex drive.

Consider asking your doctor or nurse about **intermittent hormone therapy**. This involves stopping treatment when your PSA level is low and steady, and starting it again if your PSA level starts to rise. Your desire for sex may improve after hormone therapy is stopped, but this can take several months.

You might want to try treatments for erection problems, even if your sex drive is low. Some of the treatments for erection problems may still work for you.

Hot flushes and sweats

Hot flushes and sweats can be a side effect of hormone therapy or removal of the testicles (orchidectomy). They may be at their worst when you have just started your hormone treatment, or have just had your testicles removed. The flushes and sweats may get better with time. They may become less frequent or stop altogether. Or you may not be troubled by them at all.

Everyone reacts to cancer treatment in different ways, both emotionally and physically. If you are having problems with sweats and flushes talk to your doctor or specialist nurse. They can prescribe medicines to help.

Difficulty getting an erection (impotence)

Difficulty in getting an erection can be caused by radiotherapy to the prostate; prostate surgery; having both testicles removed and most types of hormone therapy. There is information about erection difficulties on the Prostate Cancer UK page.

Erection problems can be permanent or temporary. And they can be affected by your mood and feelings. If you are having problems, they may sometimes be caused by anxiety and not the effects of treatment. You may find it difficult to talk about this both with your doctor and with your partner.

Remember that your doctor and specialist nurse will have treated many other men with the same problem so there is no need to feel embarrassed. If they cannot find treatments to help you, they can refer you to specialist sexual therapy advisors.

If you are worried about talking to your partner, it may be because you are afraid that they might reject you, or be angry with you in some way. But your partner may be wanting to talk things over.

Infertility and prostate cancer treatment

Treatment for prostate cancer will mean that you cannot father children in the future. This is called **infertility**. This can be very hard to accept, especially if you were hoping to have children. You and your partner need to discuss this with your doctor before you start treatment, particularly hormone treatment or radiotherapy. Some men may want to collect and store sperm before they start treatment.

01

What You Should Know

Information about prostate cancer in Ireland, the signs and symptoms of the disease, the PSA blood test and prostate cancer treatment.

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02

The Prostate & Prostate Cancer

Find out about what the prostate is, what it does and what prostate cancer is.

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03

Symptoms

Read about possible symptoms of prostate cancer and when to see your doctor.

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04

Risk Factor & Causes

This page tells you about the causes of prostate cancer and factors that can affect your risk of developing prostate cancer.

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05

PSA Blood Test & Screening

Find out more about the PSA blood test, how it works, what it does, its risks and benefits, and why there is no national screening programme for prostate cancer.

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06

Diagnosing Prostate Cancer

Find out more about the PSA blood test, how it works, what it does, its risks and benefits, and why there is no national screening programme for prostate cancer.

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07

Further Testing

If you have been diagnosed with prostate cancer, you may need further tests to see if the cancer has spread. This page tells you about some of these tests.

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08

Stages of Prostate Cancer

The stage of a cancer tells you how big it is and how far it’s spread. It helps your doctor decide which treatment you need.

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09

Factors in Deciding Your Treatment

Your treatment depends on where your cancer is, how big it is, whether it has spread anywhere else in your body and your general health. This page explains more.

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10

Coping with Prostate Cancer

Getting practical and emotional support can help you cope with a diagnosis of cancer, life during treatment and life after cancer.

Learn more
11

Sex & Prostate Cancer

Find out how prostate cancer and treatment can affect your relationship with your partner.

Learn more
12

Urinary Problems after Prostate Cancer

After treatment for prostate cancer you may have problems passing urine. These effects last for a few weeks for most people.

Learn more
13

Prostate Cancer & the BRCA Gene

Men that test positive for the BRCA gene can be at a higher risk for developing prostate cancer.

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14

Heroes of Hope

Read the stories of 15 Irish men who have survived prostate cancer, including Tony Ward, Sean Boylan and Michael Murphy.

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Talking

Prostate Cancer

For the third installment of the Marie Keating Foundation Talks Cancer podcast, we will be #TalkingProstateCancer. Over the next five episodes with host Director of Nursing with The Marie Keating Foundation, Helen Forristal, the “Talking Prostate Cancer” series explores the facts around prostate cancer.

Highlighting the signs and symptoms, discussing the positive progress that has been made around treatment options & the impact of early detection, we’ll talk to experts in the field of prostate cancer along with hearing some honest and open conversations about what it is like to navigate a prostate cancer journey and the impact it can have on not only the person with a cancer diagnosis but also on their intimate relationships with partners, family, and close friends.
Subscribe today to make sure you don’t miss out.

With thanks to our co-sponsors…

Season 3

Talking Prostate Cancer

Here’s a sneak peek at what to expect from this series of The Marie Keating Foundation Talks Cancer!

Season 3

Episode 1: Prostate Cancer in Ireland with Helen Forristal and Liz McEvoy

In the first episode of the series Director of Nursing and Urology Care Co-Ordinator, Helen Forristal and Liz McEvoy Urology Cancer coordinator at Tallaght University Hospital are getting the series off to a strong start exploring the facts, stats, and background to prostate cancer in Ireland.

Along with this insightful overview they answer the most frequent questions asked around prostate cancer like, what are the signs and symptoms, when to go to your GP, Family History and so much more.

Season 3

Episode 2: Treatment Options for Prostate Cancer

In this episode we delve into treatment options for prostate cancer. We are incredibly lucky to have an esteemed line up of guests taking us through a number of treatment options in depth and discussing the necessary considerations when deciding on a treatment pathway.

Director of Nursing Helen Forristal is joined by Mr Richie Power from Beaumont Hospital, Dr Gerard McVey from St Luke’s Hospital and Dr Waseem Darwish from the Mater Hospital.

Season 3

Episode 3, Patient Advocates: John Wall

In this episode we have the privilege of speaking with patient advocate John Wall whom many of you will have heard of. John is a man living with advanced metastatic prostate cancer. In this episode he shares his story with incredible honesty discussing what living with cancer is like for him and how it impacts not only his life but also the lives of his loved ones.

He talks about his journey, treatments, side effects along with his overall emotions, wellbeing, and the impact on his quality of life.

Season 3

Episode 4, Patient Advocates: Paul & Geraldine Ferris

In this episode we have the privilege of speaking with patient advocate Paul Ferris and his wife Geraldine. Former Newcastle United winger Paul Ferris was 51. He had successfully forged a post-football career as a physio, barrister and then a CEO, and his award-winning memoir, The Boy on the Shed, was just about to be published. But then he was diagnosed with prostate cancer.

He talks openly about his experience with great humor and profound bravery. Paul’s wife Geraldine joins him for some of this episode to discuss the impact of a prostate cancer diagnosis within a relationship.

Season 3

Episode 5: Survivorship with Geraldine O’Boyle

We are closing out this series with a powerful conversation about survivorship. What happens after treatment, how does it impact you physically and emotionally? We are privileged to be having a frank and open discussion with Ger O’Boyle around, infertility, urinary incontinence, erectile dysfunction, altered body image manhood and managing relationships. These are a reality for many, yet they sometimes stay silent for some for fear of stigma and judgment.

This is such a powerful and impactful conversation to share and inspire more open conversations amongst others facing these issues.

Stand Up for Your Prostate! Our Blue September 2025 Campaign
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