Mmm the football heading theory isn’t causing the vast majority of dementia patients who never played football .
Of those who did fall ill after playing football, I doubt it isn’t making up a higher percentage of the population in average terms .
I played football for 25 years in the 50’s 60’s & 70’ when football caseys were all leather laced up sometimes with the tongue bulging out from underneath due to the extra weight and swelling of the ball from heavy rain ..
Of all the players I played with in 8 teams I joined , I don’t know of any of them contracting dementia to my knowledge… my brother and me included 👍