Footballers in England are to be limited to 10 "higher force" headers a week in training under new guidelines for the upcoming season.
It comes after recent "multiple studies" were conducted into concerns about the long-term dangers of heading.
In 2019, a study found professional footballers were more likely to suffer from neurodegenerative brain disease.
The new guidance is for professional and amateur players across England from the start of the 2021-22 season.
It comes after an MPs' inquiry earlier in July said that sport has been allowed to "mark its own homework" on reducing the risks of brain injury.