Reply #20: There are studies that document how much is absorbed of the various

[philb]

types of mercury one is exposed to and that is excreted.

Mercury vapor in oral air from the continuously vaporizing amalgams is 80% absorbed into the blood.
About 80% of the methyl mercury in saliva from mercury vapor in the mouth converted to methyl mercury by mouth bacteria
or intestinal bacteria or yeast or etc. is also absorbed into the blood. Only 20% of elemental mercury particles from amalgams is absorbed, but there isn't much of this. Most of the exposure is from mercury vapor due to the continuous vaporization of mercury which is naturally a gas at room temperature, and from the continuous galvanic currents of the mixed metals in the mouth that pump mercury into the gums and oral mucosa- called amalgam tattos- most with amalgam have huge amounts in their gums, oral mucosa, jaw bone, blood vessels of the mouth, etc. and on to the rest of the body.
http://www.home.earthlink.net/~berniew1/galv.html

See Engqvist paper for the speciation, uptake and also several of the other papers that documented uptake.
They document that there is very high uptake daily among those with amalgam, and that its pumped mostly to the major organs-
brain, heart, liver, kidneys that get a lot of blood, where it accumulates over time and commonly causes chronic conditions in the long run. I've posted cites to autopsy studies documenting the high levels of mercury that accumulate in the major organs.
This is easy to confirm. The studies are readily available, and as I've noted- there have been millions of tests run by the various medial labs.

Note: the body of one with amalgam is constantly getting significant exposure that is distributed throughout the body, and much acculates in the major organs and hormone glands as I've noted(result:hypothyroidism,etc,) but the body is also constantly trying to
get rid of the mercury- with most of it excreted through the liver to the feces, and about 10% to urine, depending on form somewhat.
But over time the major organs accumulate more and more, and the liver and kidney detox systems are damaged more and more and
get rid of the mercury less effectively. I"ll post info from a major U.S. Gov't epidemeological study of 35,000 people that shows
what happens to people with amalgam in the long run- cancer, MS, neurological, immune, etc. NHANES III study