Mine was 39 at the time we were discussing it. They wouldnt do it
If you really wanted it done, you could consult a different Dr who operates at a different hospital (in case it's a hospital policy issue). If you talk whole numbers, mine was 39 both times I had it done. I'll admit, I felt every damn kilogram getting out of bed on Friday morning (first time after the surgery), but there were no concerns raised by any of the medical staff associated with my case.

PZ, I think the risks are mostly associated with the anaesthetic.