In ketosis, you are no longer dependent on glucose/pyruvate for energy production. Considering that the hypometabolic state in SEID has been found to be due to dysfunction in the conversion of pyruvate to acetyl-CoA, it makes sense that a strict ketogenic diet would help.
Indeed, the whole time I have been doing Keto, I have not experienced what I would describe as PENE/PEM - Or a Post exertion immune flare, as soon as I eat carbs I get that and also get lactic acidosis and muscle pain.
So far on Carnivore this has actually been a rollercoaster experience for me; The first couple of days I saw a lot of positives including improved deeper and longer sleep, even more mental clarity (than Keto), just feeling a bit more 'normal', Less muscle tightness and crepitus, more physical strength. Then all of a sudden on day 3/4, things flipped and I have had a big flare up of my worst symptoms that occured during paleo eating or before that; Neurological things, Inflamed sinuses and chest tightness/air hunger, Really sluggish and heavy, a bit of PEM back again, plus new symptoms like Chest pain associated with Gall bladder function, Becoming nauseous when sitting up right, Diarrhoea after walking.
I'm now on day 7 and this is all starting to pass so I am wondering if it was some kind of immune flare, or the infamous 'Die-off'. I have also wondered if I am in a deeper ketosis and therefore have heard there is a period where mitochondrial function weakens before repairing.
Anyway, I can still see some benefits so will persevere for another week and check-in, I am cautious about reversing the progress I have made so far.
@Lolo Glad you have seen some signs of improvement too!