Many years ago I was convinced my husband was suffering from sleep apnoea but he would not see our GP. He then went on a trip to climb Mount Kilimanjaro and had to share a tent with a consultant friend who told him he must attend a clinic for sleep apnoea and he was prescribed a CPAP machine which he has used ever since. A couple of years ago he was diagnosed with mixed vascular/Alzheimer's dementia. Am beating myself up now as it seems untreated sleep apnoea can lead to dementia. Maybe if he had taken heed earlier we wouldn't be where we are now .