A clinical trial in Australia is looking for 50- to 80-year-olds who report both sleep and cognitive complaints, reports 9News.

A treatment for those who snore or suffer sleep apnoea could also produce new health benefits, with a trial underway to investigate whether receiving treatment can actually stave off dementia.

Mary Andrews uses a device called a CPAP, which pumps air into the nose to stop her airways from collapsing at night.

“I was finding I was waking up in the morning with a very red face, bright red face, and often waking two to three times at night gasping for air and having lots of broken sleep so I was tired,” she said.