I have the US edition book. I went to an import book store and find a 400+ page UK edition. Both books were reprinted in 2007 but the UK one has a bit more content, most notably some personal stories and the extra section to discuss nutrition supplement and prescription medicines for the four major subtypes (ie OS,OR,DS,DR).

It seems to me the UK edition is newer and possibly more complete. Is that right? Is there a newer US edition coming up very soon?