The lead is quite unbalanced, as it is supposed to be a brief summary and introduction to the main text, and yet 1/3 is about historical-cultural-religious aspects of circumcision, which only occupies a small portion of the article itself.  I agree that information in the lead should be in the article under the relevant section, perhaps as the opening paragraph, but given there are already articles for religious practices, it is unnecessary in the lead.  It could be reduced to one, or two short sentences that state that there have been and still are historical, cultural and religious practices that involve circumcision - but without going into detail.  This is a medical article, and the use of circumcision as an initiation ritual is a different subject to medical circumcision.  Only where medical circumcision has itself become part of cultural practice should there be a focus on that manifestation of circumcision as cultural practice.