Gail, I see this researcher is right in your neck of the woods: <"Even modest sleep restriction affects hormones," said Dr. Alexandros Vgontzas, a professor of psychiatry at Pennsylvania State University in Hershey.> Do you suppose you could somehow propose a similar study on new parents, or at least new mothers, 1/3 of whom were breastfeeding/cosleeping, 1/3 breastfeeding with baby in a separate bed so they had to get up, and 1/3 of them formula feeding? Certainly would help those of us who live in localities where the public health officials are putting strong public emphasis on absolutely no co-sleeping. We have to be very, very careful what we say in the WIC office. Jean ****************** K. Jean Cotterman RNC, IBCLC Dayton, Ohio USA *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html