[R]esearchers point out that highly intelligent people have tendencies for “intellectual overexcitabilites” and a hyper-reactivity of the central nervous system. On the one hand, this gives people with high IQ heightened awareness that helps their creative and artistic work. In fact, the field of cognitive ability recognizes one aspect of highly intelligent people to be “a broader and deeper capacity to comprehend their surroundings.” This hyper-reactivity, however, can also lead to deeper depressions and poor mental health. This turns out to be particularly true for poets, novelists and people with high verbal intelligence. Their intense emotional response to the environment increases tendencies for rumination and worry, both of which predict depression and anxiety disorders.

Teodora Zareva (via Harold Jarche)