Just a quick update on my experiment returning to drinking coffee (specifically strong coffee: more than 200mg per day)

An new side-effect I have started to notice is a strong tendancy to anger and frustration, Thankfully after many years of shift work  (awhile ago now, but it still helps me  now) I can control this type of anger, but it is very strong, I have not felt this type of anger for a long time, and looking at my current lifestyle there are no other external influences causing this emotion to occur.

While this is controllable, I am concerned that during a lapse of control it may create other issues,

The other issue I'm now facing is the addictive factor of caffiene has started to kick in, I really look forward to my hit of coffee, to the point the urge to have a coffee is very strong and it is difficult to hold off having one.

Nearly all of the benefits of the caffiene hit have reduced to a point that it is not providing any 'boost' but the negative effects of coffee are still there. 

I believe it is time to stop drinking coffee for a couple of weeks and get it out of my system, whether or not I return to it again is something I'll decide upon at a later date.

Cheers

Macka