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Suicide is a complex phenomenon and seems to be paradoxical from an evolutionary standpoint, considering the multiple associated risk factors and the differences in suicide rates among countries. Suicide risks are usually attributed to economic hardship and low quality of life. However, some studies have shown an inverse relationship. Objective: To compare suicide rates reported for different countries to date with economic and quality of life indicators. Method: Suicide rates reported for 82 countries by the World Health Organization (WHO) were correlated with 2008 purchasing power parities (PPPs) and human development indexes (HDIs) published by the World Bank and the United Nations, respectively. Results: A positive correlation was observed between suicide rates, PPPs and HDIs (r = 0.3601 and r = 0.366, respectively p < 0.01). Conclusions: The positive correlation observed (i.e., suicide rates increased with economic and quality of life indicators) seem to be contradictory on the surface. We propose that interpreting these data from an evolutionary perspective could contribute to a deeper understanding of this phenomenon. Nevertheless, there are a myriad of factors that could be contributing to these results, thus further research is needed to understand suicide at a global scale.

Suicidio en el mundo: ¿puede un enfoque evolutivo explicar la relación entre tasas de suicidio y variables asociadas a calidad de vida?