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Questions remain, however, as to how toxic metals enter the nervous system, if one or combinations of metals are sufficient to precipitate disease, and how toxic metal exposure results in different patterns of neuronal and white matter loss

In thyroid disorders, selenium deficiency is a common finding, including decreased hormone and enzyme activity and reduced peripheral T3 synthesis

Christen, et al., Fruit and vegetable intake and the risk of cataract in women, American Journal of Clinical Nutrition, June 2005

Ran Q, Gu M, Van Remmen H, Strong R, Roberts JL, Richardson A
