MOSI TATUPU, 54, running back and special teamer with New England and the LA Rams, 1978-91, died of a heart attack in 2010 and was found to have CTE in October 2014, a day after his family learned he’d been elected to the Polynesian Football Hall of Fame. Tatupu left a family dinner at a restaurant after his first home game with New England and was found vomiting profusely in the parking lot by his wife, Linnea Garcia-Tatupu. Her father, a former boxer while in the marines, knew that Tatupu had suffered a concussion. The fan favorite from American Samoa underwent distinct behavior changes in his early 30s, growing aloof and forgetful, frequently misplacing things, and drinking heavily. His metamorphosis caused his 20-year marriage to unravel. In CTE the abnormal buildup of tau protein prevents the brain’s nerve cells from making normal connections with each other, eventually killing them. The buildup causes erratic behavior, memory loss, depression, and ultimately dementia. Tatupu’s son, Lofa, 32, played 6 seasons with the Seattle Seahawks and wants his 2 sons, one nearly 4 years old, and the other 6 months, to eventually follow in the family footsteps, which terrifies Linnea. “I’m not going to lie: I loved football up until I became involved with somebody who played the game. I am not going to recommend any sport where you can’t protect the very thing that is meant to keep you alive. If your brain doesn’t work, there is precious little else that will.”—“Years of battering took toll on 1980s Patriots star Mosi Tatupu”, BostonGlobe.com 1/27/15, Kay Lazar.