Re: addictive properties of nuts/nut butters - I believe that the inflammatory effects of O6 and mycotoxins are important factors. Both elevate heart rate shortly after consumption. I used to eat a lot of nut butters but ditched them about 5 years ago as I found them stupidly addictive. Now I only eat nuts very occasionally (a few times a year) when I eat out.
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.