Dr. Tom Schweizer, St. Michael's Hospital (IMAGE) St. Michael's Hospital Caption People who play contact sports show changes to their brain structure and function, with sports that have greater risk of body contact showing greater effects on the brain, according to a new study by researchers at St. Michael's Hospital in Toronto, including Dr. Tom Schweizer, director of the Neuroscience Research Program. Credit Courtesy of St. Michael's Hospital Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.