PH
Your stomach is powerful enough to digest food using strong acids. If it did not protect itself, it could even damage its own tissues. To prevent this, your stomach constantly produces a new protective lining every few days. This process keeps the acid from harming the stomach wall.
Scientists consider it one of the body's most impressive natural defense systems. It is amazing to think that your body protects itself while digesting every meal you eat.
© National Institute of Diabetes and Digestive and Kidney Diseases