You're not old until you drive an Oldsmobile Delta 88, watch golf on TV, and become a host on _60 Minutes_. Christie Brinkley, Claudia Schiffer, Roger Moore, Harrison Ford, and Clint Eastwood have all proven that you're never too old for anything.
Yes, but so does sleep apnea and depression. If you notice you're feeling more tired you should definitely talk to a doctor about it. Everything else about your health relies on sleep.