hygiene hypothesis(redirected from David P. Strachan)
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hygiene hypothesisAllergy medicine The theory that a clean modern lifestyle alters the immune system, ↑ susceptibility to allergies. See Leipzig disparity.
hy·giene hy·poth·e·sis(hī'jēn hī-poth'ĕ-sis)
The tenet that improved cleanliness and modern medical care may be lowering the ability of people to deal with otherwise nonlethal pathogens and disease.
n the theory that excessive prevention of early childhood exposure to dirt and pathogens can stunt the development of the immune system.