Tomorrow, I Become a Guinea Pig (But Not the Furry Kind)

Big news, folks! Tomorrow, I officially become a guinea pig. No, I am not transforming into a small, squeaky, hay-munching rodent (though I wouldn’t mind the unlimited snacks). Instead, I am voluntarily offering up my brain . Well, not offering it up exactly, but letting science poke at it—for Alzheimer’s research.

How did I get roped into this, you ask? Simple. I spit in a tube and mailed my DNA to some very smart people, who then decided I was a good candidate for their study. Apparently, I...