Chris Anderson
Dr. House of Chameleons
It seems that a lot of the problem comes if you start feeding them to animals that are otherwise unhealthy. For animals that are healthy, I don't think it is bad in moderation but I wouldn't recommend it regularly. Chameleons will eat vertebrates in the wild if they can find them but generally they are healthy animals that have a very balanced diet. In captivity we tend to have fat animals that have had histories of hydration issues (thus kidney damage) and then we start giving them large amounts of vertebrate prey items and it can exacerbate other problems.
Chris
Chris