I'm surprised that nobody else has picked up on this so far, but I would stop the If-ing ASAP as this can put your body under unnecessary stress, especially if you started before achieving correct hormonal environment.

The hyperphagia is probably connected to your malabsorption problem; your body wants you to eat until it has satisified it's nutrient needs.

Equally, have you been tested for intestinal parasites? I don't mean to alarm you unnecessarily, but it seems a distinct possibility as not only do parasitic infections cause fatigue and malabsorption, but many Paleos here seem to consume raw meat/other animal products or raw dairy.

Have you been tested for pernicious anaemia? This is one of the most common causes of B12 deficiency, and it is a malabsorption/autoimmune disorder characterised by bleeding gums and fatigue.

Finally, you may well benefit from iodine supplementation, but this is a long-term project. If you decide to supplement iodine, remember that it is vital to avoid triggering reactive hypothyroidism, so start by supplementing 500mcg daily and increasing at a rate of no more than double per month, until you reach the high dose upper ceiling of 12.5mg.

I'm going to go out on a huge limb here -- HUGE limb -- and suggest looking into the symptoms of scurvy:

http://en.wikipedia.org/wiki/Scurvy#Symptoms

The bleeding gums and the lethargy raise the red flag for me. In the zero carb community there have been a couple of cases lately of scurvy-like symptoms. Interestingly enough, these were with men who'd been eating low to zero carb for a long time, and in one case, who had always suffered from a chronic malabsorption/diarrhea issue.

Even though you're eating potatoes and some fruit, there's the potential issue of glucose/C competition in uptake. I know the etiology of scurvy is considered settled, but I don't think it's a closed case -- there are alternative hypotheses about the causes of scurvy that should probably be entertained.

Anyway, I'm not certain this is the right answer, but given your symptoms, I wanted to put this possibility on the table for your consideration.

Your diet seems very solid to me; similar to my own (though I'm not low carb). You don't seem to include any fish. I don't think omega 3 deficiency is behind your symptoms but I'd include some wild salmon in that diet.

See if your symptoms resolve if you add more potatoes, fruits, and vegetables. If not, you should consider non-dietary causes, like some sort of chronic low-grade infection.

casein intolerance? http://www.foodintol.com/dairy.asp

I am reading the Weston A Price book, Nourishing Traditions, and according to it you need to take good quality Cod.liver oil to get the proper balance of A, K, D, E to be able to absorb mag. It sounds like to me that your diet is unbalanced in some way. Perhaps the lack of a variety of antioxidants like quercetin and resveratrol?

It would appear that prior to implementing more carbs that you were fully keto adapted and you were a fat burning machine and then you introduced the carbs and your body doesn't yet know how to handle this new food that you are sending to the mitochondria.

Go back to the very successful 1.5 years of lacto paleo and all these problems will abate.

In the last 6 months the carbs have become addicting and now your body craves more and you won't quite do that because you want to be somewhat carb happy.

See the question on carb addition and evaluate.

Go back to when you were successful and never retreat to your addiction again.

The one thing I did not hear, was supplementation of Vit D3. It increases your immune system, prevents dental and gum problems, assists calcium to move into the bones, and elevates mood. 80% of the population is Vit D3 deficient because we are sunphobic. 10000IU a day for 3 months then back off to 5000IU will get your serum Vit D3 up. The Quilt on these boards wants his clients to be between 70 and 100ng/ml. Vit D Council says over 60.

Good luck and get back with an update.

The first thing I would do is eliminate dairy. It could be irritating and partially (or completely) responsible for your diarrhea (and subsequent malabsorption of B12). I'd also consider some time of probiotic to help your gut flora repair itself.

Here's my guess: you are having your meat well done. That means the potassium is cooked out of it, and without fruit, you're not getting the potassium anywhere else. Add some fruit - it will help with the scurvy as well - and eat your meat rare on cuts where that is safe. If you don't like rare meat, letting it come to room temperature before cooking it will make it a lot more palatable.

Also, get rid of the potatoes; tubers are no more paleo than grains. If you want root vegetables, eat carrots and onions.

You need more carbs, more fruit, more tubers and lots of salt.

Get K2 mk4 supp/D3

Which are your previous and updated TSH ?? above 2 usually indicates hypothyroidism

are you still drinking coffee?

Guts get damaged from over consumption of wheat/corn/gluten/beans etc, not what you have been eating. Is there a fix? Yup - Glutamine in large doses, for a week. If your going to try this, just do 4-6 servings a day for a week or until the bottle is empty. Is gut damage likely? Imho it is highly unlikely.

Get on a good multivitamin, take it 2x day with meals and continue Vit D, B, C supplementation. After a week of this, it will be extremely unlikely you have a vit/mineral deficiency.

IMO I would get your doctor to order you as many labs as possible (and a full physical), full blood panel, full hormone panel, thyroid panel, lipids, cortisol, glucose, and anything else you or he/she can think of, just to be sure its not something outside of your food intake that is causing your problem (which, IMO, it most likely is).

I say drop the dairy and add some paleo friendly variation. I had no idea I had issues with dairy until I dropped it theny did a test reintroduction. Rob W. talks at length about food variation.