Abnormally high monthly average temperatures in the United States and Mexico were associated with a small increase in the number of suicides and the same slight decrease in psychological well-being.
"Determining whether or not the rate of suicide responds to climatic conditions is important, as suicide alone causes more deaths globally than all forms of violence combined and is among the top 10-15 causes of death globally", explained Marshall Burke from the Stanford University, and the study's leading author. Taking into account the average of temperature variability in the United States scientists have received that in the hottest months in the history of observations, the number of suicides increased by two percent.
Rising temperatures due to human-created global warming of forecast to increase suicide rates in the United States and Mexico, a study said Monday. Suicide is the tenth leading cause of death in the us, according to the Centers for Disease Control and Prevention, and the suicide rate increased by more than 25% between 1999 and 2016. They also emphasized that rising temperatures are not direct motivations for suicide, but that the temperature can increase the chance that a situation results in self-harm. The recent study, however, reveals a connection, at least statistically, between increased suicide rates, in the U.S. and Mexico, and rising temperatures.
"The only explanation is that it's some sort of underlying biological response to hotter temperatures, " Burke said, noting that some had long suspected the contrary, that cooler temperatures were more problematic. "So better understanding the causes of suicide is a public health priority", Burke said.
The correlation between hot weather and a spike in suicides has always been known.
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Burke said, "But our findings suggest that warming can have a surprisingly large impact on suicide risk, and this matters for both our understanding of mental health as well as for what we should expect as temperatures continue to warm".
The past three years have been the globe's hottest on record, the National Oceanic and Atmospheric Administration said, just as carbon dioxide levels are at their highest in 800,000 years.
In addition, changing climate helps the carriers of risky diseases to spread into new territories.
The researchers are trying to find out that how the hot temperature affect the mind of the human. In other words, blood flow patterns in the brain could change as the body works to maintain its temperature within a certain range.
In addition, the researchers analyzed 622,7 million tweets with a specified geolocation, collected in 2014-2015, and found that at higher temperatures users were slightly more likely to use keywords which scientists have labelled as depressed. Burke said that there is good reason to think Canada would be similarly affected.