# about half of promiscuous people carry sexually transmitted diseases (STDs), and those STDs cause infertility<ref>"Among those who admitted having sex, the rate was even more disturbing -- 40 percent had an STD."[http://www.tulsaworld.com/lifestyle/article.aspx?articleID=20080312_1_C12_hUShe15125]</ref> | # about half of promiscuous people carry sexually transmitted diseases (STDs), and those STDs cause infertility<ref>"Among those who admitted having sex, the rate was even more disturbing -- 40 percent had an STD."[http://www.tulsaworld.com/lifestyle/article.aspx?articleID=20080312_1_C12_hUShe15125]</ref> |