caroline wyatt was diagnosed with the illness in 2015 and has this report. the fatty tissue tthat protects the nerves. the damage, shown by the red circle, is in the centre of the screen. as yet, few treatments exist to repair the damage done by the disease. i‘m heading to edinburgh and a leading centre for research, because scotland has one of the highest rates of ms in the world and no one is really sure why. a few miles away at the university of edinburgh, neurologist anna williams is working on brain stem cell research. the team here is examining how a damaged brain may one day be helped to repair itself. as we get older, our nerves die. that‘s part of ageing. but in ms that seems to be accelerated, and we want to be able that nerve damage now affect my hands, arms and legs, but could research being done in cambridge help? professor robin franklin heads the team that has discovered a safe, cheap drug that already exist may help regenerate adult brain stem cells. so how exactly could this commonly used diabetes drug help people like me whose ms is progres