That''s a big fear for me too. MBD. Both vets said he didn't have any signs of MBD and his bones, form, etc. looked good. It was just the URI. As you know, he is 9 years old. I am SO UPSET that the coils were most likely the reason and he probably was suffering for a while. Took 9 years for him to get sick. But I'm more aware now and have been babying him like crazy since almost losing him was super tough. Hopefully he has a few more good years left!Good I am glad to hear that--- the whole issue was caused by the UVB bulb --including the RI he had as well -- those coils are no good and cause so many issues w/ dragons and can lead to death -- as far as I am concerned vets and people that sell the dragons should be aware and up to date on this stuff -- it is unfortunate that most people are not aware of the coils being used are killing their dragon--- some dragons can go for years not showing signs of the coil effects - most can catch it in time because they will cause eye issues - quit eating -or they will start w/ the twitching which is a sign of MBD which is not good - there are many signs of MBD --