I've seen it. I think it's supposed to be lower PH, and probably of interest in acid vs an alkeline cancer diet, which is a myth.

From what I understand, cancer cells do thrive in an acid enviornment in test tubes, and doesn�t work like that in the body, and there has been no studies to prove it�s effectiness in treating cancer. The ph stick for the saliva, urine, do not mean much, and is no indication of what�s going on in the body. The body�s ph is tightly controlled by the kidney�s, lungs and normal ph is between 7.35-7.45, and body continually stays in that range. When your level goes below 7.35 it�s acidosis, too much hydrogen in the body, and above 7.45 is alkalosis, too little hydrogen in your blood, which is caused by other means.

Restricting the diet during treatment, may just deny the body some of the nutrients needed to fight cancer, and repair the body.