I have been paleo for a little over a year now. I am pretty strict and am now very sensitive to vegetable oils and gluten, which is good because I feel much healthier but it makes it pretty miserable to eat out! I have never needed to lose weight, just to stay fit and healthy. Since going paleo I have even become sensitive to non grass fed beef and I am much better with high omega-3 seafood. I have a ridiculously fast metabolism since eating paleo and if I stick to paleo foods I can eat more than seems humanly possible and maintain my weight. In fact if I go a week without eating fish/seafood or high CLA/Omega 3 meat I can feel a change in my metabolism. I see this mostly with my digestion of fructose. I have been eating a lot of fruits and lots of raw honey with my paleo diet. Some people may say honey is not paleo but I digest it very well and it does not add any fat to me. The last two months Ive been eating about 200 grams of honey a day and have stayed at 8% body fat. But when I stray from my diet and eat out a few times and don't get my Omega 3s my metabolism slows and I dont handle the fructose as well. I think this must be true in other people because the majority of people today would not be able to eat honey by the spoonful and not put on weight. This may be because their omega 3/6 balance is off and thus their metabolism is off. The hunter gatherer groups of the Hadsa and Bushmen ate a lot honey. I once read (not sure where so no source) that many hunter gatherers got 10% of their daily calories from honey. I am not recommending people on the paleo diet to add honey to their diet because I do not think the majority of people could metabolize it properly.
Maybe there is something to that PH Acid Diet because when I am Acidic or out of balance with Omega 3:6 my metabolism slows. I think someone would only see this effect on their metabolism if they have been paleo for a while and have balanced their omega 3:6 out well over a long period of time.
Does anyone else see a connection between acidity or Omega 3:6 balance to metabolism and tolerance for fructose?