Watch Brain Damage Online Forbes' title='Watch Brain Damage Online Forbes' />Math whiz Ravens star quits NFL after brain damage study. Baltimore Ravens offensive lineman John Urschel has quit the NFL just days after the worlds biggest study into a degenerative brain disease showed that it affects 9. The study, which was announced on Tuesday, found that out 1. NFL players brains examined by Boston University, 1. CTE. That news so shook Urschel who is studying for a mathematics Ph. D at MIT in the off season that he quit on Thursday, a friend told ESPN. Scroll down for video Smart thinking John Urschel pictured quit the Baltimore Ravens Thursday morning. A friend said he was inspired by Tuesdays Baltimore University report on brain damage in NFL players. Good strategy Urschel, who is working towards a Ph. Power Causes Brain Damage. How leaders lose mental capacitiesmost notably for reading other peoplethat were essential to their rise. Baltimore Ravens offensive lineman John Urschel has quit the NFL just days after a Boston University report linked football to a serious brain disease that can cause. D in math at MIT, was reportedly upset by the report, which found a degenerative disease in 1. NFL player brains tested. Urschel, who is 2. Massachusetts Institute of Technology. Steve Jobs was legendary for knowing what he wanted and leaning on his designers until he got it. But according to a new book on the history of the iPhone, he. Pharma Healthcare 9182017 730AM 1,554 views How Much Brain Damage Is Acceptable None, Says The Smartest Player In The NFL. Watch Brain Damage Online Forbes' title='Watch Brain Damage Online Forbes' />Watch Trumps Drug Czar Nominee Under Scrutiny After Opioid Investigation, a CBSN video on CBSNews. View more CBSN videos and watch CBSN, a live news stream. BibMe Free Bibliography Citation Maker MLA, APA, Chicago, Harvard. He has already published six peer reviewed mathematics papers and has three more that have yet to be reviewed. Hes also an avid and talented chess player. The player has previously complained of having his mathematical skills impaired by concussion, but until now he has maintained that he loves the sport too much to quit. Could antidepressants really cause brain damage Experts reveal the pills dont work for most people and could even cause PERMANENT harm. Millions are today being. But on Thursday, just before practice, he turned in his notice without making a statement. He had been expected to compete at training camp for the position of starting center. A friend told ESPN his decision was linked to the report. This morning John Urschel informed me of his decision to retire from football, coach John Harbaugh said in a statement. We respect John and respect his decision. We appreciate his efforts over the past three years and wish him all the best in his future endeavors. Brain drain This photo, from Boston University, shows how CTE affects brains. Its caused by repeated blows to the head and can cause dementia, tremors and erratic behavior. Urschel signed onto the Ravens in 2. As hes retiring after four years, he now owes the Ravens the final 3. According to Sportrac, once he has paid that money back he will have made a total of 1,7. In August 2. 01. 5, Urschel told ESPN that a concussion he had suffered after being knocked unconscious mid game had affected his studies. I think it hurt my ability to think well mathematically, he said. It took me about three weeks before I was football ready. It took me a little bit longer before my high level visualizations ability came back. It was frustrating, more than anything. I was trying to read advanced math papers and I was struggling. But he didnt seem fazed by the possible dangers until the Boston University report. The damage done  These brain scans show areas of NFL hall of famer Joe De. Lamielleures brain that have been affected by CTEOn Tuesday night, HBO screened a pre taped section of Real Sports with Bryant Gumbel in which Urschel said he had no plans to quit. I recognize that this is somewhat irrational, but I am doing it, he said. Its more important to me that Im able to do the two things I love. I dont know if people have really done things that Ive done before. I dont know if theyll do it after me. But I enjoy carving out my own path and not listening to what people say I can and I cant do. Urschel had already quit the game by the time the episode aired. THE REPORT THAT MADE URSCHEL QUIT THE NFLThe report, published by Boston Universitys CTE Center on Tuesday, looked at the brains of 2. NFL. They found that 9. NFL players and 8. CTE. CTE is a degenerative disease linked to concussion and repeated blows to the head that results in the brain tissue becoming damaged and stunted. That in turn leads to a series of symptoms in four increasingly severe stages. Stage one symptoms include disorientation, dizziness, and headaches stage two includes memory loss, social instability, erratic behavior, and poor judgment. Symptoms in stages three and four can include dementia, speech impediments, tremors, vertigo, deafness and suicidality. As well as analyzing brains that had been donated for research, the study team also spoke to the players next of kin to find out their clinical symptoms. The players, who lived to an average of 6. Overall, 1. 77 of the brains they analyzed 8. CTE.  It was by far the most prevalent among NFL players they found 1. NFL players in the study 9. CTE.  College players had the second highest rate, with 4. CTE.  They also diagnosed CTE in seven out of eight Canadian Football League players 8. All three of the high school players had mild CTE. The majority of all the other players had severe pathology. Among those with mild CTE pathology, 9. Among those with severe CTE pathology, 8. Bib. 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