Let me start with you, Angela. Can you tell me some
of the ways researchers are studying the relationship between genetics
and hair loss?
ANGELA CHRISTIANO, PhD: Sure. I think the
past few years have really been a renaissance in studying genetics and
hair. For a long time there really was no meaningful way to approach
hair loss from the genetic standpoint, and in recent years several groups
around the world have started taking a very simple -- what's called a "single
gene" -- approach, looking at hair loss sort of one gene at a time, starting
first with rare forms of hair loss in isolated families around the world
using the techniques of genetics that we've mastered up to now. The
challenge going forward is to be able to look at more complex forms of
genetic hair loss, like male pattern baldness, and this will involve looking
at several genes at one time. So we're just at the cusp now of trying
to look at the more common forms of hair loss using the tools of genetics
as they become available.
DAVID FOLK THOMAS: Now, you say this is all fairly
new. In the past, wasn't it like you thought people went bald because
it was genetics, so why is it just now becoming something that they can
study genetically, if you will?