Authors disposed towards mental disorders says study..

Data from nearly 1.2 million Swedish patients and all their relatives indicates link between creativity and mental illness. Authors in particular, are vulnerable and more often afflicted with bipolar disorder, – (manic depression),  schizophrenia, depression, anxieties, substance abuse, ADHD, anorexia. They also have a 50 percent higher chance of committing suicide than the rest of the population…
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On the positive side:

Creativity is the greatest form of rebellion. ~ Osho