I’m sorry, but both statements are wrong. Anodized aluminum is aluminum oxide, and is not very reactive. One of the great cookware lines of modern history, Calphalon Commercial, was and is a workhorse you could cook tomato sauce in every day and held up just fine with no discoloration and no taste changes.
As for dementia, this is a very unfortunate myth. It began with someone seizing on a study conclusion that found elevated aluminum levels in the diseased brains of people who died of Alzheimers. No study has ever found a causal relationship, and most researchers believe that the diseased brain cells simply take up more aluminum than do healthy cells.
Aluminum is the third most common element on Earth–almost twice as common as iron. People were suffering dementia long before metallic aluminum was produced, and as (uncoated) aluminum cookware has faded from the market, dementia has done nothing but increase.
