Gerocomia:Some process will occur when people grow old,which can cause lack of oxygen.Taking oxygen constantly can control presby disease and keep healthy.

• 老年保健:老年人因身体器官随年龄增长发生蜕行性病变；而易导致缺氧；经常吸氧；补氧；有利于控制老年疾病发生；维护身体健康.