If APOE4 combined with reduced DHA impairs glucose transport into the brain, would increasing blood ketone levels help sidestep this issue (along with increasing dietary DHA of course)?

How do you think algal oil would work out? Also, are you interested in studying groups of peoples and cultures and determining if e.g. somebody who's lived a life on the Mediterranean diet is better adapted to this kind of uptake and if that's reflective of a decline in AD for that group? Or maybe even just better overall mental health?