Many people? I have absolutely no data whatsoever, but I would have estimated this group of people making up 0.1% of the population or less. Do you know many pe

Many people? I have absolutely no data whatsoever, but I would have estimated this group of people making up 0.1% of the population or less. Do you know many people who are so interested in their brain that they will take this test without having a known risk of Alzheimer's?