(English) Mercury: How To Get This Lethal Poison Out Of Your Body

Mark Hyman, MD

Practicing physician and pioneer in functional medicine
Posted: February 20, 2010 07:17 AM

(Excerpt)
Risk Increases with Dose

Harvey Clewell from the ENVIRON Health Sciences Institute, Ruston, Louisiana, reviewed the epidemiologic studies from the Seychelles and Faroe islands. He showed that your risk of toxicity increases with higher doses of mercury.

Now, there are different types of mercury. Nearly all human exposures to one type, methylmercury, come from fish.

In the Seychelle Islands, there seemed be little effect on kids from mercury; however their fish consumption was predominately from low-risk small reef fish that don’t contain much mercury.

On the other hand, in the Faroe Islands people eat whale blubber, which contains high levels of mercury — over three parts per million. There, high levels of mercury were found in umbilical cord blood and correlated with reduced performance in neurologic testing in 917 mother-infant pairs.

The health effects from methyl mercury upon infants and children depend on the dose. Severe symptoms start with exposure to doses of 100 mcg/kg/day, mild symptoms with more than 10 mcg/kg/day, and sub-clinical symptoms with less than 1 mcg/kg/day. These symptoms include late development in walking and talking and decreased performance on neurological tests.

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