CoachingAnswer

IS CYCLING BAD FOR YOUR PROSTATE?

By Anthony WalshRoadman CyclingUpdated 10 July 2026

ANSWER

Cycling does not cause prostate cancer or benign prostatic hyperplasia (BPH). A large cohort study by Hollingworth et al. (2014) of over 5,000 cyclists found no association between cycling volume and prostate cancer risk. However, cycling can temporarily elevate prostate-specific antigen (PSA) levels by 9.5% for up to 24 hours post-ride due to perineal pressure, which may cause false positives on screening tests. Riders should avoid cycling for 48 hours before a PSA blood test. A properly fitted saddle with a central cutout minimises perineal compression.

KEY TAKEAWAYS

Cycling does not cause prostate cancer or benign prostatic hyperplasia — large cohort studies show no causal association.
PSA levels can rise by 9.5% for up to 24 hours after cycling due to mechanical pressure on the perineum.
Avoid cycling for 48 hours before a PSA blood test to prevent false-positive results.
A saddle with a central cutout or channel reduces perineal pressure and protects soft tissue.

WHO THIS IS FOR

IS THIS YOU?

The male cyclist over 40

You have heard that cycling damages the prostate and want to know whether to worry.

The rider with perineal numbness

You experience numbness or discomfort in the perineal area during or after rides and want to know the long-term implications.

The cyclist due for a PSA screening

You are scheduled for prostate screening and want to know whether cycling affects the result.

THE ROADMAN VIEW

This question comes up constantly among male riders over 40, and the anxiety around it is usually far worse than the reality. The evidence is clear: cycling does not cause prostate cancer. Full stop. The Hollingworth study — over 5,000 cyclists — found no association between hours on the bike and prostate cancer risk.

What cycling can do is temporarily raise your PSA levels. PSA is a protein produced by the prostate, and perineal pressure from the saddle can squeeze a small amount into the bloodstream. This matters only if you are having a PSA blood test — riding the day before can produce a false-positive result. The fix is simple: do not ride for 48 hours before a PSA test.

The other legitimate concern is perineal compression. Chronic pressure on the perineum from a poorly fitted saddle can cause numbness, which is a nerve issue, not a prostate issue. A saddle with a central cutout, correct width for your sit bones, and proper tilt eliminates this for most riders. If you are numb after every ride, your saddle is wrong — not the sport.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

Dr Mark HollingworthUrological surgeon and researcher, UCL
A study of 5,282 male cyclists found no association between cycling volume and prostate cancer diagnosis. Cyclists who rode more than 8.5 hours per week showed a higher rate of prostate cancer detection, but this correlated with higher screening rates in health-conscious populations rather than a causal link to cycling itself.
Dr Michael EisenbergUrologist and male reproductive health researcher, Stanford University
PSA elevation following cycling is a well-documented phenomenon caused by mechanical pressure on the prostate gland via the perineum. The elevation is transient — typically 24-48 hours — and does not reflect pathology. Patients should be advised to abstain from cycling for 48 hours prior to PSA screening to avoid unnecessary biopsies.

PRACTICAL APPLICATION

DO THIS WEEK

Avoid cycling for 48 hours before a PSA blood test
Perineal pressure from the saddle can elevate PSA by approximately 9.5%. This effect normalises within 48 hours. Tell your GP that you are a cyclist when discussing PSA results.
Use a saddle with a central cutout or channel
A cutout or relief channel reduces pressure on the perineum, where the prostate sits beneath. Pressure mapping studies show 30-50% lower perineal loading with cutout saddles compared with flat designs.
Set your saddle tilt to level or one degree nose-down
Any nose-up tilt increases forward pressure on the perineum. Use a spirit level and adjust until the saddle is dead level, then fine-tune by feel. Most riders end up between level and one degree nose-down.
Stand every 15-20 minutes on long rides
Standing periodically relieves sustained perineal pressure and restores blood flow. Make it a habit, especially on rides longer than 90 minutes.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

MISTAKEAvoiding cycling because of prostate cancer fears.
FIXThe evidence does not support a causal link between cycling and prostate cancer. Cycling is a cardioprotective exercise with significant health benefits that far outweigh the minor issue of transient PSA elevation.
MISTAKEHaving a PSA test the day after a long ride.
FIXCycling elevates PSA transiently. Wait 48 hours after your last ride before a PSA blood draw to get an accurate baseline reading.
MISTAKEIgnoring persistent perineal numbness.
FIXNumbness after every ride indicates nerve compression from a poorly fitted saddle. This is fixable with saddle width matching, cutout selection, and tilt adjustment. Persistent numbness warrants a bike fit and, if unresolved, a medical review.

FAQ

FREQUENTLY ASKED QUESTIONS

Does cycling cause erectile dysfunction?

Cycling can cause temporary perineal numbness that affects genital sensation, but well-designed studies have not found a higher rate of clinical erectile dysfunction among cyclists compared with the general population. Proper saddle selection eliminates the compression that causes numbness.

How long should I stop cycling before a prostate exam?

Abstain from cycling for 48 hours before a PSA blood test. For a digital rectal examination (DRE), cycling beforehand is not known to affect the results, but it is still prudent to avoid riding on the morning of the appointment.

Does cycling make benign prostatic hyperplasia worse?

There is no evidence that cycling worsens BPH. Some men with BPH experience discomfort from saddle pressure, which is a compression issue, not a disease progression issue. A cutout saddle and proper fit resolve the discomfort.

Are recumbent bikes safer for the prostate?

Recumbent bikes eliminate perineal pressure entirely because the rider sits on the ischial tuberosities with no weight on the perineum. They are an option for riders who cannot resolve perineal discomfort on a conventional saddle, but in most cases a well-fitted upright bike with a cutout saddle is sufficient.

Should men over 50 avoid long rides?

No. Long rides are safe for male cyclists at any age. The prostate concern is limited to PSA test timing and perineal comfort, both of which are manageable with proper saddle selection and screening awareness.

Does padded shorts help protect the prostate?

Padded shorts reduce peak perineal pressure, which helps with comfort and nerve protection. They do not directly protect the prostate gland itself, but reducing surface pressure indirectly reduces the mechanical force transmitted to deeper structures.