A Scottish mum who can't feel pain could hold the key to developing better analgesics, according to new research.
Mum-of-two Jo Cameron, 74, has experienced broken limbs, surgery and childbirth - with no need for drugs.
She is one of just two people on Earth known to carry a gene that allows her never to feel anxious, fear - or discomfort. Now scientists have unravelled mechanisms underpinning the rare mutation - offering hope of more effective painkillers.
