Nearly 1.2 million patients and their family members (down to second-cousins) were examined for the current study. All subjects were compared with healthy controls, Swedish residents from the most recent decades. The information could not be associated to anyone studied because the data was anonymized.Analysis provided evidence for the researchers' prior report, that bipolar disorder is more common in all individuals with artistic or scientific jobs, including researchers, dancers, photographers, and authors.
The majority of the other psychiatric diseases, such as depression, anxiety syndrome, schizophrenia, and substance abuse, were more prevalent among authors in particular.