A new study in the journal Cancer Prevention Research discovered eating just 2.5 ounces of broccoli each day helped reduce Helicobacter pylori (H. pylori) a bacterium closely tied to stomach damage and gastric cancer. Broccoli sprouts provide sulforaphane, a known cancer-fighter, which acts as an antibiotic against H. pylori. The experiment involved 48 people infected with H. pylori with half the participants eating broccoli sprouts each day. The others ate alfalfa sprouts, which do not contain sulforaphane. After 8 weeks the broccoli group had significantly lower levels of H. pylori. No change was observed in the alfalfa group; HealthDay News reports.