Professional 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.
Guidance for amateurs is "10 headers per session and only one session a week where heading practice is included".
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.