H Pylori is bacteria that can grow in the stomach. Infection rates vary between 20-50% of people and up to 80% in certain countries. It’s a helix-shaped bacteria that can drill through and burrow in the lining of the stomach. The problem with H Pylori is that it thins out the lining of the stomach lining, causing atrophy (or damage) and inflammation. This makes your stomach sensitive to hydrochloric acid, enzymes, and gastric juices even though you need them for proper digestion.