A study has shown raised risks for cancers, particularly lung tumors, in women who have taken estrogen-progestin pills for about five years. Lead author Dr. Gerardo Heiss called the results “completely unanticipated.”
Women who'd taken hormones -- even if they stopped -- were 24 percent more likely to develop any kind of cancer than women who'd taken dummy pills.
The research came as a follow-up to an initial study of hormone use in more than 16,000 postmenopausal women. The initial study was halted in 2002 when more breast cancers, heart attacks and related problems were found in hormone users versus nonusers.