Link identified between lower IQ scores and attempted suicide in men
posted on: Jun 4, 2010
Low IQ scores in early adulthood are associated with an increased risk of attempted suicide in men, according to new research from the MRC/CSO Social & Public Health Sciences Unit.
In the largest study of its kind, a team of researchers studied the medical records of over one million men in Sweden dating back over a period of twenty four years and compared rates of hospital admission for attempted suicide against IQ scores. The research, published today in the British Medical Journal, was funded by the Wellcome Trust, the Medical Research Council and the Scottish Government.
Out of a cohort of 1.1 million men with IQ measured in early adulthood, almost 18,000 had been admitted to hospital at least once for attempted suicide. Even adjusting for factors such as age and socioeconomic status, the researchers found that men with lower IQ scores were increasingly likely to have attempted suicide at least once.
Dr David Batty, a Wellcome Trust Fellow at the MRC/CSO Social and Public Heath Sciences Unit, who led the study, says: "We have found a clear link between IQ and attempted suicide in this group of men. In common with some previous, smaller studies, we have shown that men with lower scores have a markedly greater risk of attempted suicide than men of higher IQ."