With up to 200,000 people in Ireland estimated to be suffering from sleep apnoea and growing research highlighting how devastating the effects of the disorder can be, the Department of Transport has issued a new ruling that any person diagnosed with the condition must declare so on their driving licence application. Prof Walter McNicholas is one of the world’s leading experts in this field and Aoibhinn meets him and his team in the state of the art Sleep Lab facility at St Vincent’s Private Hospital to look at their work in diagnosing and treating the condition.