Hi - I've been watching Richvan's lectures on glutathione deficiency, and the symptoms are like a copybook of what I've experienced with CFS. I'm being tested for my glutathione levels now; however, I've just got back a hair analysis, and by applying the "counting rules" adopted by Andy Cutler, I am very probably mercury toxic. This would imply that both AC's and Richvank's protocols would be beneficial to me; my question is: which should I adopt first? Do I need to adopt both? I had thought that Richvank's would be best, because that might explain the mercury build-up (and associated low Na/K; lithium; high Ca/low Mg). Also, if I have trouble with methylation, I'm trying to clear mercury from a body that is prone to storing it! Very complex! Any views gratefully received.