Most children have a pH of 7.5. Over half of adults  6.5 or lower, reflecting the calcium deficiency of aging and lifestyle defects. Cancer patients are usually a pH of 4.5, especially when terminal.

Degenerative diseases, including cancer, heart disease, osteoporosis, arthritis, kidney and gall stones, and tooth decay are associated with  acidity body pH's.

When healthy, the pH of blood is 7.4, the pH of spinal fluid is 7.4, and the pH of saliva is 7.4. The pH of a healthy person is in 7.5 to 7.1  slightly alkaline range. The pH of saliva offers a window where we can see the overall pH balance in our bodies.