Believe what you want its your body.Just remember once heavy metals go into the body they are there to stay!
For accuracies sake, aluminum's not a heavy metal. Aluminum homeostasis in the body is not completely understand, but there are mechanisms that can efflux aluminum.
http://www.rense.com/general37/alum.htm
How about a more reliable and up-to-date source
Alzheimer's disease, metal ions and metal homeostatic therapy
Trends in Pharmacological Sciences
Volume 30, Issue 7, July 2009, Pages 346-355
This debate has raged for 40 years in the scientific community. The above manuscript summarizes the current theories. As it stands, there is no direct link between aluminum and and onset of alzheimers. Aluminum, as its salts, can facilitate amyloid plaque formation which is characteristic of Alzeheimers, but this not a causal relationship. Changes in the way many metals ions (Zn2+, Cu2+, Fe2+/3+) are handle within the body contribute to the development of alzheimers, not the presence of aluminum.
Some confusion arises because aluminum (again
aluminum salts) has been shown to be neurotoxic in animal models and can result in degenerative encephalopathy. But that is NOT Alzheimer related, nor is it an issue for aluminum cookware (or mill rollers).