Over-acidity creates a body environment conducive to disease, as opposed to an acid - alkaline balanced environment that keeps large alkaline reserves (calcium, magnesium, potassium and sodium), and which allows normal body function to develop and to maintain a vibrant health, as well as to resist to diseases. (altichealthprevention.com)
If the pH of your urine is lower, especially if it's below 6.5 this means you don't have sufficient alkaline reserves to buffer acids. (thebestofrawfood.com)