Patients with dental amalgam (mercury) fillings, especially those of long duration (5-30 years), and even those who have had them replaced with biocompatible materials, are known to suffer from the complications of dysbiosis, candidiasis, poor digestion, food allergies, compromised local immunity, Leaky Gut Syndrome (intestinal permeability), intestinal inflammation, impaired nerve function and diminished peristalsis causing constipation, and parasitic and bacterial infections. The mercury traveling into the gut with the saliva compromises the function of the Peyer’s patches, thus arresting the first line of immune defense. These conditions tend to persist during continued exposure to any source, after amalgam removal and at least until heavy metal detoxification is complete. Once the amalgams have been removed, the tissue burden of mercury can remain high for years to come, and the crippled bowels will not begin to return to full health until after most of the metals have been removed. During detoxification, the mobilized heavy metals can linger in the bowel for between 6 and 24 hours or more before evacuation takes place. The bowel of a healthy person may not be prone to free radical damage, but the damaged bowel of the metal toxic patient is potentially an area for added concern and monitoring.