Ken > Some studies have shown protective qualities from coffee against
liver cancer and diabetes

Hope that comment is not meant to be prescriptive.  It is possible to
find a study to prove any point you wish.  Coffee's clearly not paleo
but probably not the most harmful thing in the world.  Personally, I
gave the stuff up long ago for what that's worth.  It gives me bad
breath, gas, and makes my joints ache slightly.