Dangerous Knowledge - Four brilliant mathematicians whose genius tragically drove them insane

Correlation does not imply causality.

Not that I see any correlation here -- not by a long shot. I would embark on a census of all the geniuses who did not go insane, but this post is too short to contain it. I will, however, not miss the opportunity to re-quote the first line of Goodstein's States of Matter, IMHO the most hilarious line in physics-education history:

Ludwig Boltzmann, who spend much of his life studying statistical mechanics, died in 1906 by his own hand. Paul Ehrenfest, carrying on his work, died similarly in 1933. Now it is our turn to study statistical mechanics.

Fortunately, most of us survived stat mech.

Finally, while one can obviously dispute the cause of Turing's death, and claim that it might have had something to do with his "genius", it might also have had something to do with the public humiliation, the removal of his security clearance (and thereby, effectively, his career in cryptography), and the disfiguring hormonal treatments that were forced on him by a homophobic society. I mean, you can see how that might have been kind of depressing.