What is Sleep Apnea?

Meagan

Are there health problems before sleep apnea occur? There are several young adults who have died from sleep apnea,but I don't know if they had other health problems before they got sleep apnea or not.

I know someone over the weekend that I went to school with died in her sleep from sleep apnea,but she had been having breathing problems. She was 37. I don't know if she had any health problems or not,but she heavy set girl.