One in five might have dangerous sleep apnoea and not know it

A man sleeps more restfully with the CPAP (continuous positive airway pressure) mask used to treat sleep apnoea.

One in five people are “highly likely” to have obstructive sleep apnoea (OSA) – and most have no idea they’ve got it, according to a new study.

Researchers from the University of Paris-Cité asked 20,151 adults to complete what’s known as ‘the Berlin questionnaire’, which is designed to look for the signs of sleep apnoea.