Aluminum appears to be a copper antagonist as is
cadmium. In the hair analyses that I've seen from people with
hyperthyroidism, usually either cadmium or aluminum levels are high. This
supports the hypothesis that there are multiple ways that copper can become
depleted and lead to hyperthyroidism.
Aluminum is an essential nutrients, but in our society
there seems to be a much greater chance of getting too much aluminum
rather than too little. Here are some common sources of aluminum that you
need to avoid if your hair test shows high aluminum: antiperspirants and
underarm deodorants, aluminum cookware (especially dangerous if acid foods
like tomatoes are cooked), beverages from aluminum cans, municipal
drinking water which often has aluminum compounds added, baking powders,
bleached flour, processed cheese, some table salts, some antacids, and
breathing in dust when sanding with aluminum oxide sandpaper.