A large scale study of over 1.1 million men living in Sweden that spanned nearly a quarter of a century found a link between lower IQ measured in early adulthood and higher risk of attempted suicide later in life. The prospective cohort study was the work of Dr Finn Rasmussen, a professor in the Department of Public Health Sciences at Karolinska Institute, Stockholm, Sweden, and colleagues from the UK and Australia. They wrote a paper about it published in the 3 June online issue of the British Medical Journal, BMJ...
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