Conversely, for my case:

I was told that my sleep apnea didn't rise to the level of a medical condition needing intervention, but I should try to avoid sleeping on my back to help with the problems that do present.

I have sleep apnea that I treat with a BiPAP machine. The neurologist who manages it said that everybody has sleep apnea to some degree, and, as a matter of fact, with my BiPAP machine, I have fewer episodes than the average person.