The human body maintains a slightly alkaline pH of between 7.35 and 7.45, which keeps the body functioning optimally. Some body systems have a different pH, including the stomach acids, vaginal flora, ...

pH is a measurement of how acidic or alkaline (basic) a substance is. The scale runs from 0 to 14. A pH of less than 7 is considered acidic, and a pH of more than 7 is basic. A normal vaginal pH level ...