The low life expectancy and the demetia does not come from the ADHD itself but rather from the fact that ADHDers often do not get enough sleep and use both legal and illegal drugs (to which we get adicted easier) to compensate for our ADHD.
Also the world pretty much forces you to adapt into a system you are not compatible with. ADHDers have a delayed sleep rythm and we need on average one hour more sleep than the average human.
so we will just have to settle for those chinese Mainboards with old intel server CPUs i guess. At least the DDR3 RAM for those is a bit cheaper.