A life that leads to dementia can take many paths , but there are some common risk factors that make a diagnosis more likely. An extensive new study shows, however, that among older adults, the effect of those risk factors differs. Some risk factors seem to hit women's cognition harder than men's, and accruing multiple risk factors over a lifetime seems to worsen women's brain function more so than men's. In other words, certain risk factors may not mean the same thing in a woman's brain as it