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Sunny Days May Boost Sucide Rate - Health - Nairaland

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Sunny Days May Boost Sucide Rate by Dolcilicious(f): 6:52pm On Sep 12, 2014
The fact that suicide rates tend to peak in springtime has long puzzled scientists. But now, a new study in Austria shows that in any season, a couple of sunny days may mean higher suicide rates.
The curious link between seasons and suicide ratesdates back more than a century. Studies have consistently found a higher suicide rate during spring and a lower rate during winter. It is possible the weather and sunshine are driving the trend, but there are also other seasonal factors that could affect suicidal behaviors for example, holidays, social bonds, variations in unemployment rate and access to doctors, scientists have hypothesized.
In the new study, researchers looked directly at the number of hours of sunshine for any given day between 1970 and 2010, and nearly 70,000 suicides that occurred in Austria during that time. Austria has a humid continental climate with four seasons, including hot summers and cold winters. Other countries with similar climates include Japan and eastern North America. For the study, researchers used data from 86 meteorological stations in Austria to calculate the number of hours of sunshine per day.
The results were twofold. The researchers found a link between the number of suicides and hours of daily sunshine for the day of the suicide as well as during days prior. "Sunshine on the day of suicide and up to 10 days prior to suicide seems to facilitate suicide," the researchers wrote in their study, published yesterday (Sept. 10) in the journal JAMA Psychiatry.
Conversely, sunshine during 14 to 60 days prior seemed to have a "protective effect," reducing the rate of suicide, the researchers found. [ Read More: Red Flags for Suicide & How to Help]
The results also showed that the link between sunshine and suicide rate existed for both "violent" suicide methods such as hanging, drowning and shooting and nonviolent methods, such as poisoning.
There are some possible explanations for why sunshine may influence suicide rates. Previous studies have shown that light interacts with a neurotransmitter called serotonin, which affects mood, in both animals and people. This means that exposure to sunlight could change serotonin levelsand influence behaviors and emotions, such as mood, impulsiveness and aggression, the researchers said.
Although this study is not enough to prove sunlight is triggering the increase in suicide rates during a certain time, it adds to the evidence from previous studies suggesting that light may play an important role, the researchers said.
Suicide is the 10th leading cause of deathfor all ages, and the third leading cause of death for people ages 15 to 24 in the United States. In 2010, there were about 38,000 suicides in the United States, according to the most recent data from the Centers for Disease Control and Prevention.
Women are more likely than men to attempt suicide, but men are more likely to die from suicide. In the new study, the link between daily sunshine hours and higher suicide rates was seen largely among women. This finding is in line with the results of a previous study, which found that, compared to men, a shorter exposure to sunshine may be enough to trigger suicide for women, the researchers said.
The link between long-term sunshine and lower suicide rates was found mainly in men, the researchers said. However, it is difficult to know how true this effect is, the researchers said. For example, if people already committed suicide after a short-term increase in sunlight, then they would not have been included in the data when the researchers looked at longer periods of sunlight.
If the link between sunshine and suicide risk holds true in future studies, the next step would be to identify which patients with severe depressionare most likely to be affected by sunlight, the researchers said.

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