There you go I was mixing Furhman with Arnold Ehret. I don't understand his unwillingness to fast longer than 2-3 weeks though, especially having had a successful longer term fast himself. I was thinking of writing something simple down as a general reference, it might be easier to refer to a url of things I advise regularly than to write it in all the time, but I don't mind doing it so it's not a big deal at the moment.