الفهرس 
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Abstract
Suicide is a leading cause of premature death in young adults. Data from the World Health Organization indicate that the rate of completed suicide for the world’s population is 16 per 100,000 inhabitants, which means that each year more than a million people in the world commit suicide. Suicide attempts are five to twenty times more common than the completed suicide (Harris et al., 1997 , CDC 2009). Based on the data from the research community, approximately 5% of adults attempts suicide at least once in their lifetime (Kessler et al., 1999).
Mental health problems are the most common and best explored risk factor associated with suicidal ideas, suicide attempts and completed suicide. About 90% of all people who commit suicide met the diagnostic criteria for one or more psychiatric disorders (Wilcox et al., 2004). People who abuse alcohol and/or drugs or are dependent on them, attempting suicide nearly six times more often than people who do not abuse these substances. The rate of completed suicide among addicts is 2 to 3 times higher than among the males who are not addicts. Among women, the use of substances increases the risk of suicide for 6.5 to 9 times compared to women non addicts (Maloney et al., 2007 , Darke et al., 2004).
In most cases, drug addicts attempt suicide by overuse of drugs that is an overdose, or a combination of drugs and tablets, while in a few cases the manner in which the suicide is attempted is not directly related to drugs (Min Kwon et al., 2013). Although there is a correlation between the disorder caused by the use of substances and suicidal behavior, a large number of addicts will never attempt suicide. It is therefore important to identify those individuals with the disorder caused by the use of substances that may be at higher risk for suicide (Shneider et al., 2009 , Conner et al., 2003).
Many risk factors for suicide in the general population also apply to drug addicts. The older drug addicts are at higher risk for attempts and suicides than younger addicts (Conner et al., 2003 , Darke et al., 2002). Previous suicide