Understanding oxytocin may help us better understand motherhood, says Anne Campbell, a psychologist at Durham University, in the U.K., who has studied oxytocin and social behavior.

CNN: Stressed? Calling Mom helps, study says

Mr Cameron hit back, telling MPs that 50 NHS trusts had publicly backed the overhaul, and citing former Labour MP Anne Campbell - now an NHS official - as one of its supporters.

BBC: Miliband urges PM to drop 'disastrous' NHS bill

Radio presenter Nicky Campbell is to move back into television, replacing Anne Robinson as presenter of BBC One's Watchdog.

BBC: Radio Five Live's Nicky Campbell