Thank you for stressing the importance of diet and the role of mitochondria in neurologic health. I looked at the mitochondrial role in this older article: https://medium.com/wise-well/are-mitochondria-causing-mental-illness-6a26d41f071e

Whether magnesium alone will be capable of reversing the extensive neuronal damage and loss found in many of the conditions you mention seems dubious to me. There is potential harm if patients put off more effective treatments while trying diet cures.