Effects of Metals on the Nervous System of Humans and Animals

Several metals have toxic actions on nerve cells and neurobehavorial functioning. These toxic actions can be expressed either as developmental effects or as an increased risk of neurodegenerative diseases in old age. The major metals causing neurobehavioral effects after developmental exposure are lead and methylmercury. Lead exposure in young children results in a permanent loss of IQ of approximately 5 to 7 IQ points, and also results in a shortened attention span and expression of anti-social behaviors. There is a critical time period (<2 years of age) for development of these effects, after which the effects do not appear to be reversible even if blood lead levels are lowered with chelation. Methylmercury has also been found to have effects on cognition at low doses, and prenatal exposure at higher levels can disrupt brain development. Metals have also been implicated in neurodegenerative diseases, although it is unlikely that they are the sole cause for any of them. Elevated aluminum levels in blood, usually resulting from kidney dialysis at home with well water containing high aluminum, result in dementia that is similar to but probably different from that of Alzheimer’s disease. However, there is some epidemiological evidence for elevated risk of Alzheimer’s in areas where there is high concentration of aluminum in drinking water. Other metals, especially lead, mercury, manganese and copper, have been implicated in amvotrophic lateral sclerosis and Parkinson’s disease.

Carpenter DO. Int J Occup Med Environ Health. 2001; 14(3):209-18. 11764847 PubMed.



  1. Informative and interesting post regarding effects of metals on the nervous system of humans and animals. There are many areas where metal is causing problems to the human body such as depuy hip implant replacement and zimmer knee. These products have been recalled because of their failure. Sullo Law lawsuit is in search of these patients suffering from the implant surgery and is providing free service to get them the compensation they deserve. If you or any of your loved one is suffering with defective hip implant then feel free and hire sullo law.

  2. Hello,
    I need a referral to a holistic surgeon in the Toronto area. I had all my
    amalgams removed over 10 years ago. I have 3 root canals. I had CAVITAT done
    and can see a huge amount of infection under living teeth and in places where
    there have been extractions and even where wisdom teeth never grew. I suffer
    from fatigue and am treating numbness to the left side of my throat and face
    with high doses of several helpful supplements like stablized oxygen and
    Lypo-Spheris Vitamin C. The person who did the CAVITAT tells me that all the
    cavitations and other infections can be treated with ‘RIFE’ after the root
    canals are properly removed. Do you agree with this. Also, is Lumen Photon
    a viable option for removing the infections. Also, will Lumen Photon work
    for the root canal teeth??? I really appreciate your website and look forwrd
    to reading your insights and advice to me.



    • I would check out the IABDM or IAOMT for a surgeon in your area… they may have some referrals for you. As for Rife, I don’t use it in our practice, but I do know other practitioners who use it and have had great success. The idea behind it is the frequencies will kill off the bacteria. But if the root canal is properly removed and all bacteria is removed from the infected area using the proper protocols, it shouldn’t be necessary. Also, killing the bacteria after the fact doesn’t remove it from the body… you just end up with dead bacteria in a hole in your bone. At this time, I don’t know much about lumen photon, so I’m not sure I can be of too much help there.

      Thanks for the well-informed comment… I hope my response helps a little.

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