Aluminium is inorganic metal as foil ,or compounds as aluminium sulfate such as alum ,which is used for water sedimentation
A very small amount of the aluminum in food or water will enter your body through the digestive tract. An extremely small amount of the aluminum found in antacids will be absorbed.
A very small amount may enter through your skin when you come into contact with aluminum.Leave your bodyMost aluminum in food, water, and medicines leaves your body quickly in the feces. Much of the small amount of aluminum that does enter the bloodstream will quickly leave your body in the urine .so aluminium is dangerous for renal failure and cause dimentia ,and toxicity to fishes .