What Are the Effects of Coitus Interruptus on the Body?

Coitus interruptus (withdrawal method) refers to the practice of withdrawing the penis from the vagina just before ejaculation, thereby expelling semen outside the partner’s body. Although commonly used as a contraceptive method, it is unreliable and poses certain health risks.

Compared with other contraceptive methods—such as condom use, oral contraceptives, or intrauterine devices (IUDs)—the withdrawal method has a relatively low efficacy rate. While it incurs no financial cost, its low effectiveness exposes users to a significantly higher risk of unintended pregnancy.

If either partner has a sexually transmitted infection (STI) or HIV, the withdrawal method offers no protection against transmission. Pathogens—including viruses and bacteria—can still be transmitted via bodily fluids and mucosal contact.

Abruptly interrupting intercourse at the moment of male orgasm may cause psychological frustration for the partner and lead to dissatisfaction. Sex researchers Masters and Johnson suggested that frequent use of the withdrawal method may contribute to premature ejaculation or erectile dysfunction.

During sexual intercourse, penile erection results from sexual arousal. Forcibly terminating intercourse at this stage may disrupt normal functioning of the central nervous system and the ejaculatory centers located in the lumbar-sacral spinal region.