>No study i've seen has found any causation behind guns and suicides.
Guns don't really cause suicide. Guns are used as methods of committing suicide. Despair, desperation, depression, chronic disease, religious delusions, etc. are major causes of suicide.
In the USA, firearms dominate in the number one method of suicide at over 50%.
All suicides - Number of deaths: 41,149 - Deaths per 100,000 population: 13.0 - Cause of death rank: 10
- Firearm suicides: Number of deaths: 21,175 Deaths per 100,000 population: 6.7
- Suffocation suicides: Number of deaths: 10,062 Deaths per 100,000 population: 3.2
- Poisoning suicides: Number of deaths: 6,637 Deaths per 100,000 population: 2.1
US methods of suicide - In the USA, there are three particularly popular methods of successful suicide: firearms, suffocation/hanging (likely to be largely hanging, but will also include carbon monoxide poisoning) and poisoning (commonly by drugs). Naturally, in the US, firearms are much easier to come by than other countries, hence their relative popularity in the US as a suicide method. http://lostallhope.com/suicide-statistics/us-methods-suicide
US methods of suicide 2012