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<http://schema.org/description>
"Many of us are unknowingly trying to live our lives with poison in our heads -- in the guise of \"helpful modern dentistry.\" Ingredients of the average filling include mercury (Hg), which is amalgamated with silver. The minor detail is that mercury is a heavy metal that is poisonous to the brain and body. The long-standing dentistry belief is that in a filling, the mercury is inert, posing no harm to the owner/host. Now people are coming forward to disagree, and it's not a pretty picture."
<https://www.alternet.org/2000/04/heavy_metal_can_drive_you_crazy/>