Bifidobacterium

A strain of probiotic bacteria, that may be useful in treating ulcers caused by Helicobacter pylori, has been identified by Spanish scientists.

Researchers say that "Helicobacter pylori is considered one of the major risk factors underlying the development
of gastritis and gastric and duodenal ulcers."

The "good bacteria" (also referred to as probiotics) in yogurt and certain other foods has been found to have a wide variety of health benefits.