Since 1970, more or less, 40 italian soccer players died of ALS (Amyotrophic Lateral Sceloris). In a normal population the risk of falling ill is 3 out of 100.000 inhabitants, among soccer players is 20 out of 100.000. There is a link between soccer and ALS?
The trailer of a 15 min. documentary by Leonardo Brogioni and Stefania Culurgioni.
Music "Tango de Manzana" by Kevin McLeod (incompetech.com), licensed under Creative Commons attribution 3.0 (less info)