Congratulations, again!
My 1.5 cents worth:
Have him circumcized 1st because you are Jewish.
And for more on the medical end of it, see here:
Studies about the benefits of circumcision have provided conflicting results. Some studies show certain benefits, while other studies do not. The American Academy of Pediatrics (AAP) says the benefits of circumcision are not significant enough to recommend circumcision as a routine procedure and that circumcision is not medically necessary. The American Academy of Family Physicians believes parents should discuss with their son's doctor the potential benefits and the risks involved when making their decision.
A recent AAP report stated that circumcision does offer some benefit in preventing urinary tract infections in infants. Circumcision also offers some benefit in preventing penile cancer in adult men. However, this disease is very rare in all men, whether or not they have been circumcised. Circumcision may reduce the risk of sexually transmitted diseases. A man's sexual practices (e.g., if he uses condoms, if he has more than one partner, etc.) has more to do with STD prevention than whether or not he is circumcised.
Study results are mixed about whether circumcision may help reduce the risk of cervical cancer in female sex partners, and whether it helps prevent certain problems with the penis, such as infections and unwanted swelling. Some studies show that keeping the penis clean can help prevent these problems just as well as circumcision. Infections and unwanted swelling are not serious and can usually be easily treated if they do occur.
Hope this helps!
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