I have a friend who just had her Pit Neutered. I believe he is 3 or 4 yrs old, could be older. He really didn't change at all. He is still just as alert as ever. Also, she has his daughter, and now there is no chance of him getting her pregnant.

I don't know of the health issues with the older males, but he didn't have any problems. I do think he has had a bit of a weight gain, but not too much. He acutally just busted one of their widows trying to reach a cat on their porch. Ha.

Part of the reason they did that was to calm him down. It didn't work.