Fellatio, Swallowing Semen Can Cure Breast Cancer(?)

Are they serious?

"The results of a research study by the North Carolina State University from 2003 show that women who perform fellatio (or “blowjob” in colloquial language) and swallow semen regularly, one to two times a week, may reduce their risk of breast cancer by up to 40 percent."

Besides reproduction, sex has always been proven as healthy. But fellatio?

Link here: Fellatio, Swallowing Semen Can Cure Breast Cancer(?)