At least 1 in 4 former NFL players had CTE at death, major study finds: What the new research means

The connection between American football and head injuries just got even harder to ignore. A massive new study shows that at least one out of every four former NFL players who died in recent years had chronic traumatic encephalopathy , better known as CTE, the brain disease linked to repeated hits to the head.

The research, published in The BMJ by experts at Mass General Brigham, Boston University