I also wanted to say that Weston price says the lactic acid causes cavities. In the above article listed in my first post it says:
"Many references state that acidophilous is a lactic acid producing bacteria, which is what causes tooth decay, cavities, and mouth and gum diseases as Dr. Price discovered.
Our bodies are constantly producing lactic acid during normal metabolism, which it makes from another form of acid, called pyruvic acid, in combination with a number of enzymes. Under conditions of excess glucose and limited oxygen the body produces pyruvic acid, which is used, as noted above, to create lactic acid.
Lactic acid producing bacteria, usually found in decomposing plants and lactic products, produce lactic acid as the major end–product of carbohydrate fermentation. Acidification inhibits the growth of spoilage agents in foods. Therefore, friendly bacteria create an acidic environment."