Hi can anyone explain the reason why I experience sleep apnea only when sleeping on my left side? I'm fine on my right and When sleeping on my back but it always happens when I sleep on my left side. I saw a sinus specialist a few years back who said my left nostril was more airway restricted than my right (I never thought at the time to ask what he meant!) and I have been using steroid spray for a while also but I'm scared to sleep sometimes at night. Can you die from sleep apnea?