Question: how old was micheal j fox in back to the future

title: Michael J. Fox
text: Since 1999 , Fox has mainly worked as a voice - over actor in films such as Stuart Little and Disney 's Atlantis : The Lost Empire . On the CBS TV show The Good Wife , he earned Emmy nominations for three consecutive years for his recurring role as crafty attorney Louis Canning . Fox has also taken recurring guest roles and cameo appearances in Boston Legal , Scrubs , Curb Your Enthusiasm and Rescue Me . He has released three books : Lucky Man : A Memoir ( 2002 ) , Always Looking Up : The Adventures of an Incurable Optimist ( 2009 ) , and A Funny Thing Happened on the Way to the Future : Twists and Turns and Lessons Learned ( 2010 ) . He was appointed an Officer of the Order of Canada in 2010 . He also was inducted into Canada 's Walk of Fame in 2000 .