From "AllExperts, Special Diets", TylerDurden (I hope you don't mind...)
Montmorillonite clay/Intestinal bacteria
QUESTION: Hi, on Aajonus' that eating moist clay helps build intestinal bacteria...i have noticed that when i add montmorillonite clay to still water outside, the mosquito larvae that normally inhabit these areas, can't survive..so i wonder if that translates in humans to killing off intestinal bacteria, rather than supporting growth? I take it myself and can't decide how i feel about the effects. Any ideas on this? Terramin from California Earth Minerals is the clay...its supposed to be good for detox. Thanks for your thoughts, Sarah
ANSWER: Well, from what I understand, clay does kill off bacteria(even good bacteria), so it's really not a good idea to use it a lot. Aajonus' other recommendation (ie bacteria-rich "high-meat") might well be useful in bolstering the body with good bacteria if you want to use the clay regularly in the long-term.
I would therefore recommend using the clay only from time to time, to be safe. My own experience(re "edible French Green Clay") seems to indicate that short-term use of clay is beneficial, whereas I haven't seen any benefit from using it frequently, to be honest.