Wrotek, this is just another trashy pseudo-science blog glorifying some inadequate and incomplete study. It is crazy for them to say that immune cells should not be in the brain.
There is so much rubbish on the Internet right now. Please don't waste your time reading it. Bane, and his colleagues, are posting the latest discoveries here pretty regularly. Please try and expand the citations they highlight, not random trash talking about 'wellness' and 'nutrition' and 'energy balance' -- none of which has ever caused anybody to recover from chronic disease.