...I also have diagnosed fatty liver. ...
Igy78, how did you get a diagnosed fatty liver? Was it through a blood test? Or an ultrasound? I would be willing to do a test for fatty liver, too.
I like your fatty liver theory, because a number of clues come together:
1) this whole mercury toxicity idea -> maybe that's what caused damage to the liver.
2) I get drunk super easily, from very little alcohol. Others have reported similar observations here. Maybe something is wrong with the liver.
3) I have lots of body fat, and I had that even when I was exercising suuuuper super active cardio (way before my POIS started). This maybe hints at a problem with absorption.
4) I've done a nails test for metals and minerals and I have deficiency in essential nutrients in nails. Now, I think I have them in good quantities in blood, so the problem is with storage and transport, not with insufficient nutrition. (Note that Andy Cutler talks about how mercury may cause deranged mineral transport.)
5) While in POIS, it really feels to me like I am lacking fuel. I eat and it feels like food is not going where it should, not transformed into energy.
6) Finally, all this Vitamin D stuff here on the forum, I think we have problems with the absorption of Vitamin D (if we supply it through supplements - that's why sun is better for many of us).
That's why I would definitely be interested in doing a test for fatty liver.