Much of the text regarding circumcision and medicine comes largely straight out of Medical evaluation of circumcision (or similarly titled); that article appears to be a bit volatile, so the text may not be quite as neutral as it could be. However, the lack of medical reason is specified in that article; non-religious circumcision is usually carried out, medically, on day 5, i.e. modern medicine mostly considers day 5 to be more suitable than day 8.