Acidic Saliva and How Saliva pH Effects Oral health The saliva pH in your mouth determines if you're mouth is healthy or unhealthy. Low pH (acidic saliva), supports bacteria growth, increases your chance of cavities, tooth decay and gum disease. Most healthy people have a "normal" saliva pH of around 7.  When acidic foods, beverages, even tap water and even dental products can tip the pH creating an imbalance that supports enamel demineralization.  Acidic saliva that is around 5.5 pH is very problematic. Saliva pH gets effected quite easily by diet, medications, tobacco use and other lifestyle factors.  It's probably safe to say, that the average pH of saliva for today's human is definitely not 7.4. And since the medications are the NEW standard of living, even medications for mental health, can create dry mouth and acidic saliva pH...which is all the more reason to try to adopt a natural-first approach (where possible and IF possible)! Here's Colgate®'s tips on reducing acidic saliva pH: Avoid or limit [...]