lauer and shove them aside. that's genetic. we were looking at mouse studies. they were looking at stress hormones in the gut and the hair loss in mice. what they found was they isolated the stress hormone in the gut. they gave it to the mice that lost hair. they found they couldn't tell which mice were which. they may have stumbled on to a reason, an ability to be able to cure baldness that is stress-related. >> how much are we talking about there? is it a big percentage? >> if you look at the crown behind us, it's male patterned baldness. watch the presidents in office. president obama's hair seems thinner and grayer. there may be, now, a link between the stress hormones and not just the gut, but the fact