I saw an interesting article in the Sunday New York Times about Joan Brady, an American author living in England, who sued a shoe factory near her home for poisoning her with toxic fumes. She was awarded $230,000 damages.
As proof that she was damaged, she presented her novel, Bleedout, a mystery thriller, and claimed it was only written because she could no longer concentrate on her 'literary' novel, which she had to abandon due to neurological damage.
So, in essence, if you write mysteries, your suffering from brain damage!
Here's the link to the article. Let me know what you think.