Video report by Katie Oscroft
The family of an ex-professional footballer who is suffering from dementia are calling for more research - and better care - for players like him.
Ernie Moss who is still Chesterfield's leading all-time goalscorer has all but lost the power of speech and only leaves his home to watch matches at his former club.
His family are convinced that years of heading the ball has caused his brain injuries.
The FA says it is putting money into research into what causes the condition in footballers.