Something that wasn't pointed out in the article is that the vast majority of cases where a NFL player's family donates the brain to CTE study is where they alr

Something that wasn't pointed out in the article is that the vast majority of cases where a NFL player's family donates the brain to CTE study is where they already were showing some degenerative symptoms. They can't test for CTE on living people and if someone has it but say dies from a heart attack before ever showing symptoms, they likely aren't donating to the CTE study.