I’m sure most people know what the hygiene hypothesis is, but just in case, here’s a blurb from everyone’s favorite questionable source. https://en.wikipedia.org/wiki/Hygiene_hypothesis The original formulation of the hygiene hypothesis dates from 1989 when David Strachan proposed that lower incidence of infection in early childhood could be an explanation for the rapid 20th century rise […]

via Hygiene hypothesis: Be more dirty — Polishing Dookie