Germanium: The typical daily dietary intake of
germanium is 0.4 to 1.5 mg. Foods high in germanium include wheat bran,
vegetables, and leguminous seeds. Germanium as an organic complex has been
touted, but not proved, as having anticancer properties in humans. Some
organic forms of germanium are less toxic than inorganic forms. Inorganic
germanium toxicity results in kidney damage. Some individuals consuming
high amounts of organic germanium supplements contaminated with inorganic
germanium stores have died from kidney failure.