Sleep apnea can be life threatening. My husband's initial readings were so dangerous his doctor called us and told us to not allow him to lay down to sleep---he was to sleep in a recliner only until he could be fitted in a CPAP mask and get his O2 pressures correctly programmed into the machine. They fit him in 2 nights later as an emergency case. We had no idea it was that serious. I knew it was bad, but.... I cried when I actually heard how bad it was. Reggie White, the NFL player, died from sleep apnea. Organ damage can take place when there's oxygen deprivation. Blood pressure rises. The heart has to work extra hard to pump the blood. Your body holds onto every calorie it gets for energy because it's not getting it from restful and restorative sleep. Sleep apnea is very serious, my husband and I are both sleeping soundly every night now, the machine is extremely quiet!!