The authors contend that the Pill may also hurt a woman’s chances to compete for partners, because men can detect a female’s fertility status and like ovulating women better than others.

The authors cite a 2007 study conducted by Dr. Miller, who looked at the earnings pattern of 18 strippers who kept track of their lap-dance tips through two menstrual cycles. Ovulating dancers made $20 (U.S.) more an hour than their non-ovulating colleagues, Dr. Miller found.