Thanks for responding to my email with this useful information. Many years ago I had all my amalgam's removed. This was when I started feeling generally unwell. It turned out that it was the medication that I was on that was causing the problems. I'll get the book though because I am sure I will learn something from it.
The occam's razor sounds interesting.. I'll definitely look further into that as well as the mairgold and read up on the sulphur diets.