There are no good medical reasons for routine circumcision. If the male practices good hygiene, the reasons that used to be given for the routine practice of circumcision fall away. This substance is called smegma. Smegma is a natural secretion that occurs under the foreskin. It is not dirt and is not harmful.
All operations have their dangers.
The dangers of circumcision are bleeding and infection. The glans can be removed in a badly performed circumcision.