Remove glands from the poor ferret.....?

I think that remove the glands of the ferret it is NOT good for ferrets health!!!!That's why the most ferrets in U.S.A are having in the age of 4-5 adrenal disease....In England it is illegal to remove the glands in Europe they don't remove the glands of the ferret....Why in th U.S.A are doing this??It is not reduce ferrets smell.......What's your opinion???