"Still, about 1,600 men wear a Major League uniform in any one season and over the course of 25 years —with some players leaving the sport after just a few seasons and others sticking around much longer — that adds up to about 5,200. Against that, six players jibes pretty closely with the glioblastoma incidence in the general population."
Interesting article. Basically show how tenuous (if not downright non-existent) the connection between tumors and steroids is.