A cut above? Circumcision and cancer risk

Dear Dr G,

I recently read that circumcision may reduce the risk of penile cancer.

I had always assumed the procedure was mainly done for religious, cultural, or hygiene reasons, and never realised it might play a role in cancer prevention.

I am an uncircumcised man in my forties.

While I currently have no issues with my foreskin, I am concerned about whether remaining uncircumcised increases my risk of developing penile cancer later in life.

I hate to put you on the spot, Dr G, but I am willing to explore getting circumcised if it meaningfully cuts down my risk!

Could you shed some light on the scientific evidence linking the foreskin to penile cancer, and how much circumcision actually lowers the risk?

Does having the procedure done in childhood offer greater protection than getting it as an adult?

Most importantly, would you recommend circumcision purely as a preventative measure?

I look forward to your advice.

Yours sincerely,

Uncircumcised Uncle

 

Penile cancer is undoubtedly one of the least discussed cancers affecting men. Although relatively uncommon, occurring in fewer than one in 100,000 men annually in many developed countries, its consequences can be devastating, potentially requiring partial or complete removal of the penis. Understandably, prevention is far more appealing than facing such drastic treatment. Epidemiological studies have consistently shown that penile cancer is less common in populations where circumcision is routinely performed in childhood.

The foreskin, medically known as the prepuce, serves as a natural protective covering for the head of the penis. Simply having a foreskin is completely normal and does not automatically put a man at high risk for cancer. Rather, the increased risk is tied to specific underlying conditions, most notably phimosis, chronic inflammation, and persistent infections. Phimosis occurs when the foreskin becomes too tight to retract properly. This makes thorough cleaning difficult, trapping secretions and leading to recurrent irritation and infection. Over many years, this chronic inflammation can trigger cellular changes that increase the risk of malignancy.

The scientific evidence clearly highlights this distinction. A 2005 population-based study in the International Journal of Cancer found that men with a history of phimosis had roughly 11 times greater odds of developing invasive penile cancer compared to those without the condition. On the protective side, a 2011 meta-analysis in Cancer Causes & Control reviewing eight studies found that circumcision performed during childhood or adolescence was associated with an approximately 67% reduction in the odds of invasive penile cancer. Similarly, an American study involving 137 penile cancer patients and 671 controls found that men who had not undergone childhood circumcision had roughly 2.3 times the odds of developing the disease.

However, these statistics require careful context. A 67% reduction represents a relative risk reduction rather than an absolute guarantee of protection. Because penile cancer is so rare to begin with, the actual, real-world benefit for an otherwise healthy man is quite small. Furthermore, circumcision does not eliminate the transmission of human papillomavirus (HPV), a major driver of penile cancer.

Unlike childhood circumcision, getting circumcised as an adult has not been consistently shown to offer the same cancer-preventing benefit. This is partly because many men undergo adult circumcision specifically to treat pre-existing phimosis or chronic inflammatory conditions, meaning cellular changes may have already occurred over the years. For men suffering from troublesome phimosis, recurrent infections (balanitis), or certain chronic foreskin disorders, adult circumcision offers substantial medical relief. However, for a man in his forties with a healthy, easily retractable foreskin, major medical bodies, including the Canadian Urological Association, do not recommend routine circumcision purely for cancer prevention.

Instead, uncircumcised men can protect themselves effectively through simpler, non-surgical steps. Practising good daily hygiene by gently retracting the foreskin to wash underneath with warm water, getting vaccinated against HPV, practising safer sex, and avoiding smoking all play a vital role in maintaining penile health. Just as importantly, any persistent ulcer, unusual lump, bleeding, or change in the appearance of the foreskin or head of the penis warrants prompt medical evaluation, particularly when symptoms fail to resolve.

Ultimately, having a foreskin is not the problem,neglecting chronic tightness, inflammation, or suspicious skin changes is. Dr. G is often put on the spot for his opinion on circumcision for cancer prevention. In this case, Benjamin Franklin’s classic advice rings especially true: “An ounce of prevention is worth a pound of cure.” When it comes to protecting the most intimate part of a man’s anatomy, a little foresight is considerably more valuable than losing the foreskin!