Orkney and Shetland have the highest rates of multiple sclerosis in the world. Edinburgh University postgraduate researcher Katie Barnes looks at the genetics behind the disease – and what her current research has discovered about it in Orkney.

Orkney and Shetland have the highest rates of multiple sclerosis in the world. Edinburgh University postgraduate researcher Katie Barnes looks at the genetics behind the disease – and what her current research has discovered about it in Orkney.