we'd had a hope that giving estrogen replacement to postmenopausal women who had stroke would help them have a lower rate of stroke and when we tested it we found it didn't work if anything it made things worse so that the estrogens can make the blood a little bit stickier so that's not something that we do for a postmenopausal woman who has a stroke and even somebody on birth control pills is that a little bit increased risk of forming clots and their legs are having a stroke because the estrogens can make the blood a little bit stickier so how