This is a fascinating piece of research- much of it over my head, but there is one point I'd like to query:
"most diseases are tracked down to their source"
There are well documented cases of illness, sometimes fatal, that is triggered by "mind"; either an external malicious mind- as in the case of 'pointing the bone' amongst Australian aboriginals-, or the more common psychosomatic illnessess that are a feature of contemporary medicine.
The theory of 'intelligent design', which I tend to favor, is of the opinion that most evolutionary changes are intentionally instigated by an intelligence- i.e."mind". The mechanisms of change may be effected through mitochondria but the stimulous is non-biological.