Cancer and cancer treatments can affect your sexual function directly or indirectly. Direct effects can be caused by treatments that affect the sex organs or sex hormones. Indirect effects can be caused by side effects like tiredness, or by changes in a part of your body other than your sex organs.
It is important to remember that not everyone will have the side effects we mention. Your cancer doctor or nurse can answer any questions you may have about your treatment, and how it might affect you.