Researchers believe they’ve figured out that worm-like parasites may help stomach and bowel diseases, NBC News reports.
"Our findings are among the first to link parasites and bacteria to the origin of inflammatory bowel diseases, supporting the hygiene hypothesis," said P'ng Loke, of New York University's Langone medical center, who helped lead the research.
Taking too many antibiotics can cause the germs living in the intestines to die back, and be replaced by bad actors.
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But the research showed people in less developed areas and who are loaded with germs and worms are far less likely to have allergies, asthma and unpleasant bowel diseases such as Crohn's.