hartson was diagnosed with testicular which had spread to his brain and lungs in 2009 .
in his column in the scottish sun , hartson admitted his major health scare forced him to stop drinking as much , battle a gambling addiction and become a loyal husband .
hartson was diagnosed with testicular which had spread to his brain and lungs in 2009 .
hartson admitted to having a gambling problem that he faced up to after beating cancer .