Plot Summary:Alan Shearer investigates whether heading a football is linked to the development of dementia.
前英格兰和纽卡斯尔联传奇球星阿兰希勒探访前球员及其家属、以及研究人员，在足球比赛中使用头球是否会导致球员大脑受损乃至发生老年痴呆症 Alan Shearer investigates whether heading a football is linked to the development of dementia.
