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Repeated exposure to war zone blasts may alter brain permanently, says new study
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  • Repeated exposure to war zone blasts may alter brain permanently, says new study

Repeated exposure to war zone blasts may alter brain permanently, says new study

FP Archives • January 14, 2016, 17:01:05 IST
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US military members who are exposed to repeated blasts in a war zone may suffer permanent damage in parts of the brain that lend emotional stability, said a study on Wednesday.

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Repeated exposure to war zone blasts may alter brain permanently, says new study

Washington, United States:  US military members who are exposed to repeated blasts in a war zone may suffer permanent damage in parts of the brain that lend emotional stability, said a study on Wednesday.

Researchers have described mild traumatic brain injury (mTBI) – more commonly called “concussion” – as the “signature injury of the wars in Iraq and Afghanistan,” said the report in the US journal Science Translational Medicine. More than 250,000 US service members have been diagnosed with mTBI around the world, and post traumatic stress is a common accompaniment. [caption id=“attachment_2555294” align=“alignleft” width=“380”] ![Representational image. AFP ](https://images.firstpost.com/wp-content/uploads/2015/12/US-soldiers-Kabul-AFP-380.jpg) Representational image. AFP[/caption] Seeking to understand more about how  these brain injuries affect the brain, a team of researchers at the VA Puget Sound Health Care System and the University of Washington studied war veterans and found that the more blasts they experienced, the more chronic changes occurred in specific parts of the brain. They found that  repeated exposure to blasts affected the cerebellum, resulting in “persistent dysfunction” in this area of the brain that coordinates movements and also influences a person’s emotional state. Studies on mice showed that those exposed to repeated, mild blasts lost neurons in the same brain regions. A similar pattern of loss has been documented in retired boxers, going back several decades, the report said. “Problems with mood, irritability, and impulsivity are very common in our mTBI veterans,” said study author Elaine Peskind. “These findings suggest we should pay more attention to how mTBI affects the cerebellum if we want to fully understand the emotional difficulties experienced by veterans with mTBI.” AFP

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