Why would juice be illegal, but not a diet that is better designed for competition over another?
The actual sport we are talking about is illegal, so why would steroids be unethical?
I do agree with Jack in that we should be 100% natural and go into such a contest with the purpose of all the reasons he mentioned above.
However, there is still a winner and a loser and there is much to be lost.............unless, there's just not much money on the line and the two contestants are in it for "high purposes"......as in a gentleman's agreement. I ain't met too many of those.

As for teeth, I've seen shorter teeth do more damage and longer teeth be a disadvantage.......too many variables.

So where is the line drawn on advantages becoming a cheat?