So does this mean that folks with an immune deficiency in complement C3 have some kind of protection against Alzheimer’s?

You might have autoimmune diseases and chest infections that take forever to clear, but possibly also less of your brain disappearing with age, if research on mice is relevant to people.

Complement C3 deficiency protects against neurodegeneration in aged plaque-rich APP/PS1 mice

http://stm.sciencemag.org/content/9/392/eaaf6295

Readers of this blog from back in 2011-2012 could have predicted this, because I pretty-much predicted this with my immune hypothesis of synaesthesia and my immune hypothesis of Benson’s syndrome (a variety of dementia). I wonder how many lives could have been saved and cases of dementia prevented if the world of science had bothered to read my blog and taken my theories seriously back then and set to work finding a therapy that reduces levels of C3? How hard could that be? It happens naturally, so how hard could it be to engineer a similar process? Instead all I got for my ideas and blogging was synaesthesia researchers plagiarizing my ideas shamelessly in a speculative paper about synaesthesia (a mere triviality in the world of neuroscience compared with the tragic and expensive problem of dementia). And all this time funding for dementia research has been counted in the hundreds of millions of dollars and has given the public virutally nothing in the way of effective therapies. How much of that research funding do I get? Not one single frickin’ red cent, because I’m not a scientist. I’m just a housewife with ideas, and a blog.