Amyloid beta may have beneficial antimicrobial and metal chelating properties.

“some of these Hallmarks may be epiphonominal right they just accumulate — in the face of neuronal stresses and I'm I'm speaking about this largely or pretty much only in in the case of late onset Alzheimer's disease your brain is going to get exposed to a bunch of things — be that decreasing metabolic function be that smoking vascular disease and then as neurons get stressed they start to secrete some of these proteins or accumulate some of them and there are some lines of evidence that suggest that some of it's actually a beneficial response so amyloid beta has some antimicrobial and metal collating effects”