Pre paleo I had the white tounge real bad , after about 3 days into a fast my tongue would clear up,but it would always come back , I was already malnourished before this diet so I decided that starving it out isn't a good option.. I have been raw paleo for 11 months and the white fuzz is gone but I still suffer from an affliction called geographic tongue. My wife has it too and my kids get a spot every now and then,My father and has it as well. Its supposed to be some benign condition of unknown origin that affects some 30 million people, but I believe it is a poisonous fungus that is impossible to get rid of, perhaps some mutant strain that is resistant to virtually everything, I will often wake up with a fungal taste in my mouth. I try to ignore it, but I have noticed it flares up in cycles and when it breaks out, I have vague symptoms of foggy handedness and low energy, It seems to zap the life out of me, although now I am not as bothered by it anymore and when it does occur I am no longer bed ridden with fatigue like I used to be.