study on Suicide risk factors by team in Sweden and Stanford

"This shows that many had contact with the health service a relatively short time before committing suicide. The results have clinical significance for those working in both primary care and other out-patient and in-patient care, including psychiatry. Besides the health service, social support services may need to be involved in the work to reduce the number of suicides in society," concludes Jan Sundquist.

Results:
Depression (32-fold risk for suicide), anxiety (15-fold risk), COPD (3.05-fold risk), asthma (2.25-fold risk), stroke (1.67-fold risk) and cancer (1.72-fold risk). Those who have poor social networks are also at higher risk of suicide (e.g. divorced 2.25-fold risk).

About the study:
The researchers used the Swedish population and health register and were therefore able to follow over seven million adults between 2001 and 2008. Of these, 8,721 committed suicide.

 http://www.sciencedaily.com/releases/2013/06/130610084132.htm