Searching for Suicide Methods: Accessibility of Information About Helium as a Method of Suicide on the Internet.
BACKGROUND
Helium gas suicides have increased in England and Wales; easy-to-access descriptions of this method on the Internet may have contributed to this rise.


OBJECTIVE
To investigate the availability of information on using helium as a method of suicide and trends in searching about this method on the Internet.


METHODS
We analyzed trends in (a) Google searching (2004-2014) and (b) hits on a Wikipedia article describing helium as a method of suicide (2013-2014). We also investigated the extent to which helium was described as a method of suicide on web pages and discussion forums identified via Google.


RESULTS
We found no evidence of rises in Internet searching about suicide using helium. News stories about helium suicides were associated with increased search activity. The Wikipedia article may have been temporarily altered to increase awareness of suicide using helium around the time of a celebrity suicide. Approximately one third of the links retrieved using Google searches for suicide methods mentioned helium.


CONCLUSIONS
Information about helium as a suicide method is readily available on the Internet; the Wikipedia article describing its use was highly accessed following celebrity suicides. Availability of online information about this method may contribute to rises in helium suicides.
1 School of Social and Community Medicine, University of Bristol, Bristol, UK.
David
D
Gunnell
1 School of Social and Community Medicine, University of Bristol, Bristol, UK.
Jane
J
Derges
2 Institute of Health Policy and Management, and Department of Public Health, College of Public Health, National Taiwan University, Taipei, Taiwan.
Shu-Sen
SS
Chang
1 School of Social and Community Medicine, University of Bristol, Bristol, UK.
Lucy
L
Biddle
D022126:Access to Information; D006371:Helium / Q000506:poisoning*; D006801:Humans; D057226:Information Seeking Behavior; D020407:Internet; D057386:Search Engine; D013405:Suicide; D006113:United Kingdom
D006371:Helium
Internet and suicidal behavior; availability of means; media; method restriction in suicide prevention