Further to my post on Percy Weston's book, here is a site which says more about 
the book: http://phosadd.com/support%20evidence/weston.htm

............  Weston's book is an outstanding read, full of fascinating detail 
about his experiments and experiences and we strongly recommend it to our 
visitors. Anyone with a family history of cancer or arthritis would be well 
advised to read it. Percy Westons's diet is available - he has published a 
chart showing the phosphorus content of common foods in milligrams per hundred 
grams. He has published a second book titled "Cancer Fighting Foods". A tablet 
form of his mineral supplement, given the name rhomanga, has received 
certification under the very strict provisions of the Australian Therapeutic 
Goods Act and is on the market (see below).

It is indeed striking that Weston and Hafer, two persistent and dedicated 
investigators working at opposite ends of the earth from one another, have 
reached such similar conclusions about the dangers of excessive exposure to 
phosphorus/phosphate and have achieved such remarkable results in treating such 
serious conditions as cancer, arthritis, ADD and asthma.

That Percy Weston, having had two encounters with cancer personally and a 
number of other serious health crises is on track to achieve the status of a 
centenarian in 2003 would seem to bear testimony to the effectiveness of his 
recipe for sound health.

and also on same site:   http://phosadd.com/diet/diet.htm

Phosphate is a very common ingredient in our modern diet of processed foods. It 
is a highly versatile food-additive which is of great interest to food 
manufacturers. For example it is used in the preservatives, emulsifiesr, 
stabilisers, thickeners, it is added to the flour aerators in self-raising 
flours, to soda and cola drinks and it has many other usages. One German 
factory produces twenty to twenty-five tons of this versatile substance a day, 
which finds its way into innumerable convenience foods.