Liver psoriasis and redbull

I don't believe much of what I hear in the media - in particular facts and figures from television programs like today tonight.  However I heard something today that I had never really thought too hard about - the possibility of redbull causing psoriasis of the liver.  Perhaps it is obscure to think that a beverage so easily purchasable by anyone could be seriously damaging but upon assessing further information I am intrigued to find out the details.

I have previously read other articles about the negative effects of redbull.  There have been people who have died after drinking more than three cans of redbull in combination with strenuous exercise, although in stating 'people' I have read of too.  Also, I read an article of a man who had extreme bacterial growth around his liver due to drinking copious amounts of redbull.  I am obviously not an idiot and definitely do not believe that energy drinks are healthy in any way but as for such serious issues as this, are there facts and figures that can correctly diagnose redbull as the problem?

I am going to do my best to research this but if anyone knows anything credible please let me know :)