Hygiene hypothesis: A hypothesis that states that exposure to allergens in the environment early in life reduces the risk of developing allergies by boosting immune system activity. Conversely, relatively clean environment in early life would sway the immune system towards allergy-promoting responses. Also called the hygiene theory.
The hygiene hypothesis may explain the rising incidence of allergic diseases and facts such as the following: -- the lower incidence of allergy in those living on farms or in rural areas (due possibly to more exposure to bacteria in barns and elsewhere in the country); the lower incidence of allergy in younger children of large families with 3 or more older siblings (due perhaps to repeated exposure to infection from older siblings); and the lower incidence of asthma and wheezing in children who go to day care centers (where they are exposed to more infections). The hygiene hypothesis, however, cannot explain the higher rates of allergic asthma among poor African Americans in the inner city areas.
Hygiene hypothesis information ... The Hygiene Hypothesis or Old Friends Hypothesis. The hygiene hypothesis suggests that our bodies are ecosystems that have been damaged by a ...
Asthma: The Hygiene Hypothesis What do clean houses have in common with childhood infections? One of the many explanations for asthma being the most common chronic ...
Hygiene Hypothesis: Millions of people suffer from the sneezing and wheezing of allergies and asthma, diseases that have suddenly become epidemic in some parts of the world.
What is the hygiene hypothesis? Learn more about the hygiene hypothesis, one major explanation for a recent increase in the prevalence of food allergies.
The Hygiene Hypothesis was back in the news recently, following a story in The Wall Street Journal, 'Can Dirt Do a Little Good?' As many parents know, the