In a highlight from Auckland University’s Raising the Bar Home Edition, Dr Helen Murray explores the relationship between repetitive head injuries and dementia, RNZ reports. “There’s no magic number of [physical] hits to the brain that determine if someone will get CTE (a brain disease associated with traumatic concussion), and not everyone who plays a contact sport will get it. So why is it that some people do, and for them how do we modify, delay or stop this disease?” Dr Murray asks.