The Hygiene Hypothesis actually suggests that limiting exposure to microorganisms in childhood might result in worse immune tolerance, leading to a higher rate

The Hygiene Hypothesis actually suggests that limiting exposure to microorganisms in childhood might result in worse immune tolerance, leading to a higher rate of autoimmune issues: https://en.m.wikipedia.org/wiki/Hygiene_hypothesis https://en.m.wikipedia.org/wiki/Hygiene_hypothesis