Lawyers probably do come into it but there is also quite probably some base in fact; I read an article last year (possibly in New Scientist) talking about why there were more cases of cancer in the west than the developing world. The main idea was that it was lack of sunlight causing vitimin C deficiencies leading to cancer. BTW in order to get the vitimin C you need direct contact with the suns rays - not through glass which will absorb the UV rays.