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"Cleanup" redirects here. For the Wikipedia term, see Cleanup.

Cleanliness is the absence of dirt, including dust, stains and bad smells. In more recent times, since the germ theory of disease, it has also come to mean an absence of germs and other hazardous materials. A recent shift has now taken place to recognise that ‘dirt’ may play a useful role in our immune systems. This shift in thinking can be traced back to 1989, when David Strachan put forth the "hygiene hypothesis" in the British Medicine Journal. Strachan looked at the records of 17,000 British children and found that the greater number of older siblings they had, the less likely they were to come down with hay fever—a disease which, despite its name, is far more common in the city than the country. Strachan wondered if the older children were bringing home more viral infections to their younger siblings, priming their immune systems so they could better tolerate pollen. The "hygiene hypothesis" has now been linked with asthma, allergies, intestinal diseases including Crohns disease, childhood leukaemia and atopic dermatitis and the list is growing. It can apply to humans, animals, clothing, eating utensils, plates, pans, cups, etc., food, other movable objects, floors, windows, walls, toilets, etc.

"Cleanliness is next to Godliness," a common phrase, describes humanity's high opinion of being clean.

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Boys Noize whilst cleaning the window ledge :)
HayleybabyH (Hayley MC Miller) Sat, 07 Nov 2009 11:48:15 -0000
Boys Noize whilst cleaning the window ledge :)
is busy at home today. Cleaning downstairs...FUN :)
pandanita (Desiree Bjørsland) Sat, 07 Nov 2009 11:33:23 -0000
is busy at home today. Cleaning downstairs...FUN :)
I have no idea why I'm awake at 6:30 am on a Saturday. A fun filled day of grocery shopping and cleaning lies ahead.
sallyroyerderr (Sally Royer-Derr) Sat, 07 Nov 2009 11:28:12 -0000
I have no idea why I'm awake at 6:30 am on a Saturday. A fun filled day of grocery shopping and cleaning lies ahead.
Things I should really do today include washing the car, cleaning out the garage and fixing light in garage.
Legion11 (Wayne ) Sat, 07 Nov 2009 10:24:04 -0000
Things I should really do today include washing the car, cleaning out the garage and fixing light in garage.
I just finished cleaning our kitchen..and now, my lower back aches. Ouch! xD
chaassy (Chastine Labayane) Sat, 07 Nov 2009 08:03:29 -0000
I just finished cleaning our kitchen..and now, my lower back aches. Ouch! xD
im also cleaning my room today..
hannahlyn07 (Hannahlyn Capua) Sat, 07 Nov 2009 08:01:13 -0000
im also cleaning my room today..

 
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