Aluminum is inert in the body. In spite of this, injuries to the pulmonary system and fibrosis have been found in animals exposed to prolonged inhalation of heavy concentrations of aluminum dust. In contrast to copper and a number of other metals, aluminum does not accelerate the loss of vitamins in cooking. The aluminum intake due to cooking in aluminum utensils is insignificant.

The fact that the aluminum compounds have been used for years in the therapy of peptic ulcers and gastric hyperacidity without any apparent ill effects shows that the oral toxicity of aluminum is practically negligible.