Obstructive sleep apnoea costs UK and US economies £137bn a year, research finds

Disease, which causes people to stop breathing while asleep, linked to increased risk of heart attack and stroke

Obstructive sleep apnoea costs the US and UK economies more than £137bn ($185bn) a year, according to research.

People with the serious health condition repeatedly stop breathing temporarily while asleep; they tend to snore very loudly and can wake up gasping for breath.