about one-third of women about one-third of women Abortion is an ongoing genocide a 2008 study about one-third of women estimated 28 percent of American women have had an abortion between one quarter and one third of US women four out of ten American women this research 28% of women between one quarter and one third of US women 28 percent Percentage of United States women who have had abortions 1 in 4 in the US