>>>>>Has Stephen Hawking been tested for mercury levels?
Only chelation therapy according to Andy Cutler can give you the ultimate answer whether somebody is mercury toxic or not.
>>>>>Also how is it he able to function as a brilliant scientist when mercury toxic people can't even balance their check book?We all know how mercury affects the brain and why has it not affected Hawking this way?
Not all people get affected this way. Maybe not even a majority, I don't know. Once I saw on Discovery an autistic man who was able to multiply such high numbers, that the results had to be checked using two calculators.