The Professional Footballers' Association (PFA) has announced the first comprehensive protocol to prevent chronic traumatic encephalopathy (CTE), a neurodegenerative disease associated with repeated head injuries and blows to the head. New safety guidelines recommend that professional footballers, both men and women, practice heading the ball no more than 10 times a week. They also include cases with 10 times per head at all. The principles include less direction, less force, less often and later in life. Adam White, director of brain health at the PFA, told the Associated Press. The topic of CTE has become a topic of interest in football, rugby, American football and martial arts. In 2022, the PFA introduced a phased ban.