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My concern is the aluminum layer. Is it on the inside with the nonstick coating over it. All my cooking is done on stainless steel since Alzheimer's is known for a build up of aluminum in the brain.
Actually that's not true. The relationship between aluminum and Alzheimer's was debunked decades ago (after rising in prominence in the 1960s and 1970s). Turns out that there were trace elements of aluminum in the reagents used for preparing samples for testing, and that's what was detected. They also were looking at an animal model for one specific animal, and that animal happens to accumulate aluminum in metabolism at multiple times any other animal... and good statistical analysis showed that even then there was zero correlation or causation. If you're worried about aluminum and you drink tea, you're likely getting a multiple of the amount of aluminum in your daily cuppa than you would from a full day of cooking in aluminum (tea plants consolidate aluminum). Drinking tea has zero correlation with the disease. This from the head of neurofunctional research specializing in Alzheimer's and Parkinson's at one of the top medical schools in the country (who I worked with on an AI study of the disease... we used the aluminum hypothesis as one of the negative training data sets.)
So, I wouldn't worry about aluminum and Alzheimer's. Go do some reading to satisfy yourself. I'd worry more about the PTFE in Teflon, for other reasons... which is why pans now don't use Teflon.
Don’t worry. The aluminum layer is sandwiched between two layers of stainless steel. The PFOA free nonstick is on top of a layer of stainless steel.