During heatwaves, there is an increase in the number of people suffering with obstructive sleep apnoea (OSA), according to a major study published in the European Respiratory Journal.

People with OSA often snore loudly, their breathing starts and stops during the night, and they may wake up several times. Not only does this cause excessive sleepiness, but it can also increase the risk of high blood pressure , stroke , heart disease and type 2 diabetes .

Researchers say their findings are particularly important as heatwaves are becoming more frequent and intense due to climate change.

The research was carried by a team from the Adelaide Institute for Sleep Health and FHMRI Sleep Health at Flinders University, Australia, led by Dr Lucía Pinilla. Researchers analysed data on 67,

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