From what I understand, the vast majority of the aluminum absorbed by the body comes from food, not from deodorants or anti-persperants.



See, aluminum is the third most common element on earth and is the most common metal - as such it isn't surprising to learn that just about every organic creature contains some aluminum.



That's right, every time you eat a plant or an animal you are ingesting aluminum.



The kidneys happen to be very good at removing aluminum (again, not surprising, since aluminum bonds to ammonia, and ammonia is found in urea - the major constituent of urine).



So, like any other mineral, what aluminum is not required by the body is flushed.



Like just about every other medical topic, however, the issue is always up for debate. The human body is essentially an absurdly complex chemical reaction, and understanding each component's function and potential malfunction is never easy and rarely (if ever) completely understood. That said, after 40 years of study the link between aluminum and disease has only gotten weaker, not stronger - such that it lives on primarily as folk wisdom, not sound medical doctrine.



tl;dr: Like a great many topics of folk wisdom, fears of aluminum in anything but very large quantities are almost certainly unfounded.

