Cases like the one in China pose something of a mystery. None of the 19-year-old's family had a history of Alzheimer's or dementia, making it hard to categorize as FAD, yet the teenager had no other diseases, infections, or head trauma that could explain his sudden cognitive decline either.

Not good. I wonder how many and what different kinds of immunizations he was subject to. It looks like they did not want to research too deeply into what happened to the kid. Do you think there was an environmental influence on him?