Many mental illnesses and addictions are more heavily associated with premature deaths than heavy smoking, yet we tend to be less aware of their risks.
A study by Medicare’s inspector general of skilled nursing facilities says nearly 22,000 patients were injured and more than 1,500 died in a single month—a higher rate of medical errors than hospitals.
There's no way to prove whether or not someone's had an out of body experience, but that hasn't stopped scientists from trying to study the phenomenon.