Seems like stressed out is a pretty common state of mind. This scientist thinks she's got insight into why so many women feel overwhelmed, and it has to do with outdated biochemical pathways. She starts mapping out her connections starting at 5:29. At 14:10, she sums up what she calls women's biggest health challenge today and describes her response. She's trying to solve a lot of big problems through individual behavior change (in contrast, subsidized child care and a better family-leave plan would probably do wonders for many women's stress levels). But whether or not you buy her whole premise, she's got a central message about love that's pretty hard to beat.