Suicide is a serious public-health problem, particularly in developed countries, where high suicide rates among young males are considerably high. Indeed, suicide is one of the leading causes of death and of potential years of life lost. The etiology of suicide is certainly complex, with different factors likely playing an important role. Among these are genetic factors, as consistently suggested by several genetic-epidemiological studies that have been carried out over the last years. However, the exact mechanism by which genes increase susceptibility to suicide is not known. Several lines of evidence suggest that genes may predispose to suicide by modulating impulsive and impulsive-aggressive behaviors. In this review, studies that investigated the role of genetic factors in suicidal behavior, as well as the relationship to impulsive-aggressive traits, arediscussed.
Suicide; impulsive behavior; impulsive-agressive behaviors; genetics
