This is a must-read thread from 2011. I've studied it multiple times. Somewhere in the middle of it, another Freeper with a biochem background shows up and attempts to bash the whole thing; he was not successful IIRC.
http://www.freerepublic.com/focus/f-chat/2769347/posts
Toothbrush no longer enters my mouth unless it's loaded with baking soda.
Thanks!