Suicide is a global public health priority. An estimated 800 000 people die by suicide a year, exceeding deaths by war and homicide combined. The United Nations Sustainable Development Goals include a target (target 3.4) to “reduce by one third premature mortality from non-communicable diseases through prevention and treatment and promote mental health and well-being”; suicide is one of the two indicators for that target. With the degradation of the planet due to human activities, rapid urbanisation, and the influence these factors have on the environments in which people live, there is growing evidence of the impact of natural environments on health, including mental health. The association of natural environments with population suicide risk is therefore worth exploring. Possible mechanisms underlying any association might include a beneficial effect of natural environments on stress, depression and other mental disorders, and social cohesion, which are all risk or protective factors of suicide.... Refers to Marco Helbich, Derek de Beurs, Mei-Po Kwan, Rory C O'Connor, Peter P Groenewegen Natural environments and suicide mortality in the Netherlands: a cross-sectional, ecological study The Lancet Planetary Health, Volume 2, Issue 3, March 2018, Pages e134-e139
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