I believe(and I say this loosely) that premature age or liver spots(as some call them) are linked too antioxidants. However, I'm not sure on any of that.
I'm also not sure about the Miracle-Mineral-Supplement /liver theory. Though it is possible when all is said and done. Especially when we consider that the product is highly experimental and that we know very little about it and its effects on the body.
Also, have you considered trying the latest Chlorine Dioxide solution instead of Miracle-Mineral-Supplement ? It is a newest acid'less MMS component approved by Jim Humble. And I for one would be very curious if it induces tiredness like the MMS does.