No one can really say for sure what the exact nature of the problem is. More studies def need to be done. At this point in time most people are going to agree that floppy tail is caused by a combination of inadequate supplements and climbing areas. The problem could also be genetic, however the entire line would have to be looked at to solve that one. Whatever the exact cause, proper husbandry (feeding, caging, etc) techniques are your best preventive measure at this time.