>Children should be allowed to get dirty, according to scientists who have found being too clean can impair the skin's ability to heal.
>...
>A spokeswoman for Allergy UK said there was a growing body of evidence that exposure to germs was a good thing.
>http://news.bbc.co.uk/2/hi/8373690.stm
>
>Is it really news that training our immune systems with various external toxins is a good way to prevent future illness? Isn't this stuff we've known for a while now? Like since the 1700s? How bad is the current state of western public education?

Now you do need the found the publication where some crimeegghead declares that the pollution of our environment (aka toxine) will enhance our immune system.