P H

From pH levels to pounds gained or lost, to sperm counts, your health is often measured by numbers. Get the facts on the stats vital to your wellbeing. And, the latest on the 17 Day Diet Challenge!

The pH is the level of acidity in any area of the body, and the normal pH of the esophagus is 6. Heartburn pain occurs when lower-level pH acid splashes through the stomach opening and into the esophagus, which causes a burning sensation and damage to...