Too much acidity in the body leads to all sorts of health problems, including heart disease, cancer and overgrowth of bacteria. An overly acidic system is the main cause of digestive issues, immunodeficiency, respiratory problems, kidney stones, joint problems such as arthritis, and even tooth decay. You will experience some common signs if the acid levels in your body are too high. Headaches, fatigue, digestion problems, increased heart rate, and even shortness of breath