I googled 'organic aluminum'...and this is one of the things I read about naturally occuring aluminum. I condensed the article into just the key paragraphs that relate to organic aluminum, and other factors to consider that relate to absorbing aluminum into the body:
"Our exposure to aluminum is certainly nothing new. It is one of the most common elements in the earth's crust and has long made its way into our foods. Ancient man consumed aluminum when rocks were used to mill grain into flour. Minimal exposure to aluminum isn't a problem; our bodies can excrete small amounts very efficiently. Laboratory research has shown that we can handle about twenty milligrams of aluminum ingestion each day.7 Unfortunately, most of us are exposed to and ingest far more aluminum than our bodies can handle."
"Aluminum is the most abundant metallic element in the earth's crust. It is abundant in the soil, water and air particles. Acidic rain increases the amount that is leached into our water supplies.
Aluminum is an abundant element in dirt. It is found naturally in nearly all foods and herbs. Herb companies, knowing how much aluminum a pure herb should contain, can use a laboratory measure of aluminum content to indicate how clean the plant (especially root material) is; extra dirt would add to the aliminum content.
There is a distinct difference between organic and inorganic forms of aluminum.Sources of Aluminum and aluminum compounds
Aluminum is primarily absorbed into the body through the digestive tract. Dietary intake ranges widely from 5 to 150 mg/day. These levels do not seem to interfere with the absorption or utilization of calcium, phosphorous, zinc, copper, selenium, iron or magnesium. Adequate calcium intake may decrease the risk of aluminum toxicity.
It is also absorbed through the lungs and skin."
"Aluminum researcher Elizabeth Jeffery has found evidence that flouride interferes with the body's ability to get rid of aluminum. She says, "My research indicates that flouride readily combines with aluminum in the blood, and that aluminum flouride, once formed is very poorly excreted in the urine." She believes that the aluminum fluoride then becomes concentrated in the bones (where flourine replaces calcium) and continues to slowly release and recycle through the body over time. "
"The body is easily able to manage normal, natural levels of aluminum. The body excretes 74-96% of our normal dietary intake of aluminum. Most of the aluminum forms insoluble salts, especially phosphate salts, in the intestine. These are mostly excreted in the feces instead of being absorbed. In excess, however, this can produce a phosphorous deficiency which leads to calcium loss which leads to structural problems.
The aluminum that is absorbed is only poorly excreted by the kidneys and can easily accumulate in body tissues. It tends to concentrate in the brain, liver, thyroid and lungs."
"Minute amounts of organic aluminum are needed in the brain to catalyze (activate) important enzyme systems. The herb gotu kola, which has a reputation as a memory booster and brain enhancer is assayed to have amoung the highest levels of aluminum of all herbs."http://www.angelfire.com/az/sthurston/alzheimers_and_aluminum_toxicity.html