MedicalConspiracies- journal Applied and Environmental Microbiology claims that it also pulls out heavy metals.

Health Advantages of Bentonite Clay

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Internal Cleansing

Bentonite clay is best known for its internal cleansing properties. Bentonite swells when exposed to water, forming a type of sponge. Toxins are drawn into the spongy substance because the clay has a negative charge on its flat surfaces and positive electric charges on its edges, which attracts toxic ions like a magnet. The toxins then bind with the clay and are eliminated from the body through the intestines. The Canadian Journal of Microbiology reports that bentonite clay traps herbicides, pesticides and viruses; an article in the journal Applied and Environmental Microbiology claims that it also pulls out heavy metals.