sentence: Anal sex can still pass sexually transmitted diseases from one partner to another.
sentences_before: Anal sex is when an erect penis or other device made for sexual pleasure is inserted into the sexual partner's anus. Anal sex with a female does not lead to pregnancy by itself, however, semen can leak out of the anus and enter into the vagina, and pregnancy may rarely occur.
sentences_after: It can also be very unhealthy for the body because the skin around the anus can tear, bleed and get infected with bacteria.
concept_name: anal sex
headings: Sexual intercourse Other kinds of sex Anal sex
categories: Biological reproduction Human sexuality