Ulcer- and Cancer-Causing Bacteria Also Protects Against Asthma

A microbe that has caused trouble in human stomachs for around 60,000 years may also play a role in preventing children from developing asthma and other allergies. In a new study, researchers say that a current campaign to wipe out the bacterium, Helicobacter pylori, may be having the unintended consequence of boosting asthma rates in kids.