Btw, Naviaux reported that women with ME/CFS have problems with beta oxidation i.e. making energy from fat. Before keto this wasn't an acute problem for me. After long-term keto my ability to extract energy from fat collapsed and I developed an intractable feeling of hypoglycaemia despite actually being mildly pre-diabetic (another consequence of long term low carbing for me was development of insulin resistance; prior to that diet my blood glucose was always normal). Having to depend on gluconeogenesis to maintain blood glucose level is another source of stress and energy depletion for the liver because the process costs you ATP. When my condition became severe my energy would drop to literally zero and I wasn't able to even stand up if I went without eating for more than a few hours. In other words, my ability to fast was completely obliterated. Given the documented problems with fat metabolism in women it's questionable how many here would be able to tolerate this fat-based diet.
We sound similar. I had hypoglycaemia since childhood and a year or two after onset started feeling terrible after eating, as if I had low glucose though I think you can feel terrible if it goes to high as well? Back then, my fasting glucose had climbed into the low 60s (it was lower before), but it now averages 89. On my last test my fasting insulin was 5, which I thought was good, but my doctor has said that I have loads of insulin resistance symptoms that are just kept under control by my "perfect" diet so I have now been put on Metformin. If I fast past 2 pm I start to feel like death; my muscles become painful and twitchy and it really seems as if I can feel them breaking down somehow (yes, I know a doctor would think that was psychological talk
). My doctor had me try a keto diet before medication and it seems I am completely unable to utilize ketones? My urine ketones went too high, too quickly. She says it is due to mitochondrial dysfunction.
The only explanation I have is that some people might have more or less dysfunction in the pyruvate/carb cycle than with the cycle that relies on ketones. This would explain why many don't do better on a keto diet - if they are low in some of the necessary precursors, they might be just as inefficient at using ketones as the are using pyruvate. Those who do better on a keto diet probably have a more efficient cycle and all the right precursors.
What are the precursors to using ketones?
Could it be that people who are feeling worse are not in full Ketosis? Without sounding ignorant, does everyone use Keto urine strips to monitor ketones?
I did use urine strips the times that I tried. By day 2 I was measuring higher than the purple '80' and very close, if not equal to, the brown '160.' After that I stopped and the next day had a family birthday celebration where I ate absolutely enormous amounts of pasta followed by cake and ice cream, then ate exactly the same thing (including the deserts) for a late meal before bed. I tested my urine at that point and had 0 ketones. After sleeping 12 or so hours to make up for the exertion, I tested my urine again and was back up the mauve '40.' I have no idea what this means exactly, But I expect that my body's metabolism is totally screwed.
In case you are wondering, as a test of the strips' accuracy I checked them while eating a regular and even lower carb diet a number of times and they were totally negative.
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This is *way* too much text for me to properly sort. If something doesn't seem to make sense please ask for clarification.