Can rectal cancer be transmitted through sexual activity?

Nov 14, 2025 Source: Cainiu Health

Dr. Li Jingxiang

Introduction

In general, rectal cancer itself is not transmitted through sexual activity. During the course of rectal cancer, individuals should adjust the frequency of sexual activity according to their specific condition and physical status, avoiding excessive fatigue that may affect treatment and recovery. Personal hygiene before and after sexual activity should be maintained to reduce the risk of genital tract infections. If any physical discomfort occurs during treatment,

In general, rectal cancer itself is not transmitted through sexual activity. The detailed explanation is as follows:

Rectal cancer cannot be transmitted through sexual intercourse because infectious diseases require three elements: a pathogen, a transmission route, and a susceptible population. Rectal cancer is a malignant tumor caused by abnormal proliferation of epithelial cells in the intestinal mucosa; it is not caused by infection with a pathogen, and therefore lacks any transmissible causative agent. During sexual activity, physical contact and exchange of bodily fluids between partners cannot transfer abnormal cells or disease-causing factors related to rectal cancer, so one partner cannot contract rectal cancer from the other through sexual intercourse.

During treatment for rectal cancer, individuals should adjust the frequency of sexual activity according to their medical condition and physical status, avoiding excessive fatigue that could impair treatment and recovery. Personal hygiene before and after sexual activity should be maintained to reduce the risk of reproductive system infections. If any physical discomfort occurs during treatment, sexual activity should be temporarily suspended and promptly reported to a physician. Partners should provide emotional support, jointly monitor the patient’s health, accompany them to regular follow-up appointments, and help the patient better manage the disease.

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