Good story on the BBC website about obstructive sleep apnoea (OSA)http://news.bbc.co.uk/1/hi/health/8549619.stm However the article is misguided, certainly in my experience, to suggest that "...Britain has yet to wake up to the dangers of obstructive sleep apnoea (OSA)."
In this regard, and as a sufferer, I have to take my hat off to my local hospital trust, Sherwood Forest Hospitals NHS Foundation Trust http://www.sfh-tr.nhs.uk/. I was referred there by my GP some 18 months ago as he suspected I was a sufferer from sleep apnoea and after attending the Sleep Clinic this was confirmed. Since then, apart from trying to loses a little weight (which would help) I have been given a C-PAP machine to wear at night when I sleep http://www.cpap.co.uk/
The difference has been astounding, and has resulted in increased energy levels and increased ability to concentrate, less irritability etc etc. As, as I drive a lot in my job it has removed the risk of falling asleep at the wheel.
Sleep apnoea is dangerous, and I would urge anyone who tends to drop off, regularly, on the sofa in the evening to seek a diagnosis. It could save your life. I, for one, am pleased that my local hospital is a leader on this front.