Why might a condom be recommended during cancer treatment for men?

According to the National Cancer Institute, a condom may be advised during cancer treatment for men for two main reasons.

First, semen may contain traces of chemotherapy for a period of time after treatment. Using a condom can help prevent a partner's exposure to these drugs.

Second, depending on a partner's age, contraception may be advised to prevent pregnancy. Even though cancer and its treatment can lower fertility, pregnancy can still be possible, and some treatments can be harmful to a pregnancy.

The National Cancer Institute suggests asking your care team specific questions, such as what precautions you need to take during treatment, whether you need to use a condom to protect your partner, and what types of contraception, if any, are recommended.

Whether a condom or other contraception is advised depends on your treatment and your situation, so your doctor or nurse is the best source of guidance. They can also help with related questions about fertility and sexual health during and after treatment.