Healthy Ageing in Iranian Traditional Medicine's Resources in the Occasion of the World Health Day 2012

older population. And, also in 3 of four main encyclopedias of Iranian Traditional Medicine [End notes]; Kamel-al-Sanaah, Canon of Medicine, Zakhireye Khawrazmshahi, which are written by Ahvazi, Avicenna and Jorjani respectively, the mentioned cutoff is 60+ years. Population ageing means the process by which older individuals become a proportionally larger share of the total population. It was one of the most distinctive demographic events of the 20 century and also will surely remain important throughout the 21 century. Initially experienced by the more developed countries, the process has recently become apparent in much of the developing world as well. For the near future, virtually all countries will face population ageing, although at varying levels of intensity and in different time frames.