There has been a controversy about aluminium and at one time they though it had something to do with Alzheimers but found out after it had the samples where corrupted by putting them on an aluminium sheet. Having said that where I live they cooked in iron pots and there was no anemia now they all use aluminium and there is a lot of iron anemia.
Another avenue of toxic exposure comes from cooking and serving ware, such as when acidic foods, like tomatoes, come in contact with stainless steel. Brightly colored, low-temperature-fired pottery and stainless steel alloys can contain toxic metal components that are capable of poisoning us when acidic foods leach toxins from the pots, pans, and flatware. Aluminum and other metal toxins are potential hazards in this regard, with possible connections to Alzheimer's syndrome, Parkinson's disease, and other associated problems. Pottery (also GLASSWARE) that has been properly glazed and fired (such as crock pots, stoneware and porcelain), and untreated wooden and ceramic utensils provide safer alternatives than items containing toxic metals.http://www.vitaletherapeutics.org/immunecf.htm (I found that site when here: https://www.natmedtalk.com/showthread.php?t=1392)