Hmmm... I work with many people with dementia including AD, and I have heard for years now that the correlation (never demonstrated to be causative) was tenuous at best. WebMD, Alz.org, etc. are good places to start for learning about this terrible disease, but most sources I recall indicate that no to very little AL gets into food from cooking utensils, especially if it is passivated and not scrubbed bright after it darkens. The allele you mention is indeed correlated with increased risk (along with many others) but is not causative, and that's the first time I've heard an attempt to link it with AL. If it's on the Internet in more than one place I'll give it another look
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Swobee I bet it was copper I was misremembering.
