Junior Seau’s recent suicide and a flurry of lawsuits from former NFL players have brought nationwide attention to traumatic brain injuries, and the eventual depression that can result from them. Seau’s suicide reminded many of Dave Duerson, a safety who killed himself in a similar manner (gunshot to the chest) and requested his brain be studied for a link between repetitive head injury and depression. Researchers confirmed that such a link existed. When someone experiences a severe brain injury, it can alter the structure of the brain and block the flow of mood-regulating chemicals like nonrepinephrine, serotonin and dopamine. Depression medications can adjust the flow of these chemicals (known as monoamines) to improve a person’s mood. Some of Seau’s former teammates have said that he never mentioned being depressed because it would go against the linebacker mentality: just power through it. According to a study published in the Journal of…
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