Aluminum. Aluminum cookware is very popular. Nonstick, scratch-resistant anodized aluminum cookware is a good choice. The hard surface is easy to clean. It is sealed so aluminum cannot get into food. There have been concerns in the past that aluminum cookware increases the risk for Alzheimer disease. The Alzheimer's Association reports that using aluminum cookware is not a major risk for the disease.
Researchers tracked aluminum exposure of 130 Alzheimer’s patients — but the study has been discredited because it relied on other people to provide data for the patients.