10 things you need to know about CPAP machines

Eleven months ago, I wrote a column called Dying in my sleep, in which I described my years-long experience with obstructive sleep apnea. Millions of Americans suffer from sleep apnea, a condition that causes their nighttime oxygen levels to drop. Over time, sleep apnea causes damage to your body, raising your blood pressure and damaging your heart while also increasing your risk of stroke. It is not simply snoring, and it is not merely an inconvenience.

A year after my diagnosis and treatment for sleep apnea, Ive found myself, suddenly, a minor authority on the topic. I answer questions about it all the time and even wrote a very brief book detailing my experience. Despite all that,