“…Three lines of evidence raise concern regarding potential effects of ovulationinducing drugs on cancer risk. First the most commonly used medications, 18 3,837 1974-1985 12.3 Australia (Venn et al) 22 10,358 1978-1992 6.5 Israel (Modan et al) 37 2,496 1964-1974 21.4 Israel (Potashnik et al) 26 1,197 1960-1984 17.9 USA (Croughan-Minihane et al) 19 51,371 1965-1998 5.6 Netherlands (Klip et al) 23 25,152 1980-1995 5.6 UK (Doyle et al) 24 5,556 1975-1989 7.9 USA (Brinton et al) 20 12,193 1965-1988 18.8 Israel (Dor et al) 27 5,026 1981-1992 3.6 Israel (Lerner-Geva et al) 48 1,082 1984-1992 6.5 clomiphene citrate and gonadotropins, are effective for stimulating ovulation, a factor implicated in the etiology of both breast and ovarian cancers. Second, these drugs raise both E 2 and P levels, hormones that are recognized as affecting the development and growth of breast and gynecology cancers as well as some other cancers.…”