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Results 1 - 2 of 2 for Hygiene hypothesis
  1. Allergies 
    ... may prevent some allergies. This is called the "hygiene hypothesis." It came from the observation that infants on ...
    https://medlineplus.gov/ency/article/000812.htm - Medical Encyclopedia
  2. Story of Fluoridation From the National Institutes of Health (National Institute of Dental and Craniofacial Research)  
    Tooth Decay/Related Issues ... Tooth Decay ... National Institute of Dental and Craniofacial Research ... From the National Institutes of Health
    https://www.nidcr.nih.gov/.../fluoride/the-story-of-fluoridation - External Health Links