To undertake a systematic review of the international research literature on factors or causes that associated with suicidal thought or suicidal behavior on LGBT sexual minority group in order to summarize current finding and finding research gap for future study. Electronic search was conducted in Oct 2016 of the database SCOPUS; 10 studies was identified as related with this topic. LGBT had higher odd of suicidal ideation compared to non-LGBT overall. Victimization was the risk factors that had significant correlation to suicidal ideation. School climate and family connectedness were protective factors associated with suicidal ideation among LGBT. Teachers act important role in school to forbid the occurrence of victimization on LGBT through education. In short, social support from family, peers, school, LGBT may lead a healthy psychological state rather than suicidal thought.
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