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FORT COLLINS, COLORADO. The leaching of toxic mercury from amalgam fillings has
been implicated in hearing loss. Mercury toxicity has also been linked to
multiple sclerosis (MS). It is believed that the toxic effects of mercury cause
damage to the blood brain barrier, demyelination (damage to the nerves' myelin
sheaths) and slowing of the nerve conduction velocity. Now researchers at the
Rocky Mountain Research Institute provide convincing proof that dental amalgam
fillings may be responsible for the hearing loss often experienced by multiple
sclerosis patients. Their experiment involved seven women aged 32-46 years who
had been diagnosed with MS. The women underwent a standard hearing test in a
sound booth and then had all their amalgam fillings replaced with composites.
Six to eight months later they were again given the hearing test. Six of the
seven patients had significantly improved hearing in the right ear and five of
the seven showed improvement in the left ear. Overall, hearing improved an
average of eight decibels. The researchers conclude that amalgam fillings may
be a significant factor in hearing loss experienced by MS patients and could be
a factor in hearing loss in other people as well.
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