However, the aluminum, which comes from food, is hydrophilic as it has been assimilated by plants and it is naturally tied to oxygen or silica. The World Health Organization estimates the average adult dietary aluminum intake between 10 and 15 mg per day. Aluminum is one of the most abundant minerals on earth, second only to silica. It is in virtually everything we touch, most of the air we breathe, water we drink and is in most foods that we eat. More can be taken if desired.
Children usually take one-half the adult amount.