研究表明老干部的癌症发病率是老和尚的8倍。连接:
https://www.google.com.sg/url?sa=t&source=web&rct=j&url=http://journal.9med.net/upload/pdf/42/743/38488_2975.pdf&ved=0ahUKEwiR577dperUAhWHO48KHdU9BYAQFggbMAA&usg=AFQjCNFESWmEERgII3omrhD7dQOwxogknA