 it turns out studies have been done in women between the ages of 40 and 50 who died of accidents, accidental deaths or suicide. So they do the autopsy studies and what they find is that 40% of women between the ages of 40 and 50 have microscopic breast cancers. In men, they studied autopsy studies of men between ages of 50 and 60. 50% of men between the ages of 50 and 60 have microscopic prostate cancers that will never turn into a deadly condition for them.