"The study was published in The Lancet, one of the world’s most prestigious medical journals, but seems to have been forgotten in the 20-odd year interim. Not a single interventional study testing the role of iron in Alzheimer’s disease has been published since." https://nautil.us/iron-is-the-new-cholesterol-237280/
Pharma does not want to cure or prevent any illness - their industry and fiscal goal is 'monetize misery as long as possible'.