don't get short changed. get your cash back. chase freedom. >> welcome back, everyone. i a stunning study released as 100,000 women had a heart attack and didn't even know it. how can that happen? joining us is e.r. doctor and star of "the doctors" back within the same month, travis stork. good to see you again. >> good to see you. >> this is shocking. i'm a woman. i know heart disease is the number one killer of women and i don't think a lot of other people in society realize that. >> 1 in 3 of us suffer from heart disease. we used to think of heart disease and heart attacks as a problem for men but more and more we're realizing that women have heart disease in the same numbers. their symptoms are a little more subtle so women will have a heart attack sometimes and not even know it. and that is frightening. >> so 100,000 in this particular study. what do you make of that? i mean, would a woman just feel