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Here's Why Living in High Altitudes Raises Depression and Suicide Risks

High Altitudes may affect the mood and suicidal thoughts of a person.

IANS

Updated:March 12, 2018, 7:24 AM IST
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Here's Why Living in High Altitudes Raises Depression and Suicide Risks
Image used for representation purpose. (Getty Images)

People living in the high-altitude areas have increased rates of suicide and depression, possibly due to reduced oxygen levels in their blood, finds a study.

Chronic hypobaric hypoxia -- a condition whereby blood oxygen levels get reduced due to low atmospheric pressure -- may affect the mood and suicidal thoughts of a person living at altitudes between about 2,000 and 3,000 feet above the sea level.

Suicide and major depressive disorder (MDD) are complex conditions that almost certainly arise from the influences of many interrelated factors.

"There are significant regional variations in the rates of major depressive disorder and suicide, suggesting that sociodemographic and environmental conditions play a role," said Brent Michael Kious, a post-doctoral student at the University of Utah in the US.

Hypobaric hypoxia could promote suicide and depression by altering serotonin metabolism and brain bioenergetics -- both of these pathways are implicated in depression, and both are affected by hypoxia, the study showed.

The study, published in the journal Harvard Review of Psychiatry, noted that the other factors linked to suicide rate include increased poverty rate, lower income, and divorced women.

Researchers analysed 12 studies, mostly performed in the US, including population-based data on the relationship between suicide or depression and altitude.

The results found that populations living at higher altitudes had increased suicide rates despite having decreased rates of death from all causes, including substance abuse and cultural differences.

Some possible treatments to mitigate the effects of altitude on depression and suicide risk include supplemental 5-hydroxytryptophan (a serotonin precursor) to increase serotonin levels, or creatinine to influence brain bioenergetics, the researchers said.

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| Edited by: Shifa Khan
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