not just life expectancy in toto which you would rightly expect to have a huge number of variables that interact in unknown ways. many medical procedures have

not just life expectancy in toto which you would rightly expect to have a huge number of variables that interact in unknown ways. many medical procedures have proven to be directly detrimental to health in double blind studies yet remain standard procedure. read this to become completely disillusioned with medicine. http://www.overcomingbias.com/2010/07/catheter-infection-law.html http://www.overcomingbias.com/2010/07/catheter-infection-law...