1. Laurie Adamson Laurie Adamson United States says:

    Follow up research needs to look at what is causing the lower levels of the neurotransmitter serotonin. Here is one hypothesis, slow aluminum accumulation in the brain. Take a look at this study: Aluminium-induced changes in the rat brain serotonin system https://www.ncbi.nlm.nih.gov/pubmed/12419702

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