Old age and Ageing - what is the relationship between these two similar terms?

Summary: 今天陳曙儀醫師跟大家探討老年和衰老兩者的關連和它們之間的分別，還有，大家從什麽時候開始就應該抵抗衰老呢？ Rose Chan, a Chinese medicine practioner, uses WHOs Definition of an older or elderly person to make her point.