'Unprotected sex' refers to any act of
sexual intercourse in which the participants use no form of
barrier contraception.
Sexually transmitted infections
Specifically, ''unprotected sex'' usually refers to
sexual activity in which the participants use no form of protection from
sexually transmitted infections. It can thus be contrasted with "
safe sex".
Advocates of the practice believe that sustained direct friction between skin and mucous membranes, and commingling of fluids, results in increased stimulation, fuller intimacy, and more powerful orgasms for all participants.
Birth control
Less commonly, ''unprotected sex'' is used to refer to sexual intercourse without the use of any form of
contraception. The two meanings are different because there are forms of birth control that do not involve barrier protection such as
hormonal contraception. This meaning is commonly used in discussions of
fertility awareness, where couples avoiding pregnancy can identify infertile portions of the
menstrual cycle where unprotected sex carries a very low risk of pregnancy.
[1]
Footnotes
1. Fertility Awareness-Based Methods
Opinion: Fertility Awareness and Natural Family Planning, , Virginia, Lamprecht, Network,