\\\\From the NHS link.
The exact cause of bipolar disorder is unknown\\\
Exactly....so one cannot say with certainty, that Bruno's problem isn't related to his boxing career........or indeed that is is.
\\\\\Brain damage can cause a wide range of 'mental health conditions'.\\\
That is what Eddie said and that is what I agreed with.
Who mentioned wiki?
As you know, i have had my "run ins" with NHS websites in the past and i do not take them ad verbatum.