I’ve listened to Dr. Sarah Myhill a long time ago she is really good on what mitochondria needs to be healthy. Such as the development of the membrane or coenzyme Q. She is clearly on the right track. This report explains the process how the body creates coenzyme Q.
Myhill and Reiter differ is on levels of Melatonin Myhill believes you can over dose. I’m with Reiter on this. I don’t know what else the differ on.
Chronic Fatigue Syndrome and Fibromyalgia are very broad terms. Doctors love to use broad terms as they want to treat the symptoms.
Here is the bases on how Melatonin works
Melatonin - sleep cycles Russel J. Reiter
https://www.youtube.com/watch?v=I7YIRqTNmuY&t=1s
This is more details from Loh and Reiter (heavy reading)
mitochondria health Melatonin: Regulation of Biomolecular Condensates in Neurodegenerative Disorders
https://www.mdpi.com/2076-3921/10/9/1483/htm