Originally Posted by mrsD

I do think it is worth while to test mitochondria in patients with chronic low metabolic symptoms.

I am not sure about all the statements you are quoting, however.
Some forms of PN affect the autonomic nervous system itself and therefore sweating would be affected.

Let us know what the results are, in any event.
And your research is very helpful here...please do keep that coming. In medical systems, often factoids are scattered about and may not be understood properly. " The B12 on an empty stomach" is an example. Research with drugs in microgram amounts/doses showed poor or no absorption when food was present in the GI tract.(thyroid hormone and digoxin) This is a huge issue with the microgram amounts of B12 we need to absorb orally. But this evidence so far is not connected to B12 information (except for me) it appears!