original thread
my vote is no as dietary manganese is fairly abundant... its very VERY easy to achieve 200-400% DRI in even a moderately healthy diet. anyone voting yes should prove the benefits in healthy adults with studies.
http://lpi.oregonsta...rals/manganese/
A study of older adults in Greece found a high prevalence of neurological symptoms in those exposed to water manganese levels of 1.8-2.3 mg/liter (29), whereas a study in Germany found no evidence of increased neurological symptoms in people drinking water with manganese levels ranging from 0.3-2.2 mg/liter compared to those drinking water containing less than 0.05 mg/liter (30). Manganese in drinking water may be more bioavailable than manganese in food. However, none of the studies measured dietary manganese, so total manganese intake in these cases is unknown. In the U.S., the EPA recommends 0.05 mg/liter as the maximum allowable manganese concentration in drinking water (31).
A single case of manganese toxicity was reported in a person who took large amounts of mineral supplements for years (32), while another case was reported as a result of a person taking a Chinese herbal supplement (25). Manganese toxicity resulting from foods alone has not been reported in humans, even though certain vegetarian diets could provide up to 20 mg/day of manganese (4, 32).
Edited by ajnast4r, 05 November 2009 - 01:33 AM.
