I'm almost 72 and spend time every year at between 9,000 and 10,000 ft. I've never been bothered by altitude sickness. I live at about a 600 ft. elevation and walk daily for two miles and have done so for a long time. However, altitude sickness bothered my wife a great deal when she was younger. It seldom affects her now at 73, but she's active and also walks daily. I don't think she ever took any medication when she was troubled by the sickness and it always subsided completely in two or three days.
