Could oral sex be a pregnant woman's best defense against morning sickness? ( or is it an idea invented by men with expecting wives? ) It may sound like a statement made by a man with a pregnant wife but according to experts, the best way to cure morning sickness is to perform oral sex. A psychologist at the University at Albany-SUNY has claimed that women who consume sperm from the male who impregnated them are likely to counteract the common side effect during pregnancy. Gordon Gallup, who works within the university's psychology department, believes that morning sickness is simply caused by the introduction of semen, a foreign substance, in order to impregnate her