According to his statement he used it to help him recover from injuries faster at first.
See statement in related link below.
Mark Mcgwires parents were John and Ginger Mcgwire.
Big Mac
Mike, Bob, Danny, Jay
he played 16 seasons, with the Oakland Athletics and the St. Louis Cardinals.
No bcos he has does weightlifting competitions before, and even if he did he couldn't bcos he would get disqualified.
Mark McGwire announced January 11, 2010 that he used steroids for nearly a decade while playing baseball.
Mike Thurman of the Montreal Expos on September 27, 1998. McGwire hit #70 later in the same game.
1996-2001 season
Norman Mark Ratcliffe has written: 'Synthesis of hydroxylated steroids'
Derek Jeter,Mark Tex, nick swisher and a-rod have all used steroids from 2009- Present
According to CNN and AP, Mark McGwire admitted on Jan. 11, 2010, to being on steroids when he broke Roger Maris' home run record in 1998.
it has been said that he used steroids