There is a lot of talk about brain fog, what causes it, and how to cure it. However, when you ask those folks that speak of this “brain fog,” exactly what it is, or to point to their own brain fog, or, perhaps, “foggy brain,” I can assure you they will not manage to come up with any actual fog.
What is fog? Fog is usually a weather condition, something found in the surrounding atmosphere, the sky around us, not inside a person’s skull where the brain is. How, I may ask, can fog get inside there? That I know of, there’s a certain amount of fluid sloshing around in there, not much, though, but certainly not fog, not the kind of fog we see after it rains.
So when people speak of “brain fog,” are they totally wacko? Should they go to see a psychiatrist for their delusions? Perhaps not. Perhaps they are speaking in metaphor instead. Perhaps they are comparing their state of mind, “foggy,” to a foggy day, rather than a clear one, when visibility is improved. I get tired of it though, since the implication is that there’s real fog inside the brain. I feel sorry for such folks if they truly believe this. As far as I know, fog is made up of what we think of as moist air. It contains evaporated water, oxygen, carbon dioxide, and other gases, maybe pollutants. If it’s even possible for fog to leak inside the brain or skull cavity, it will undoubtedly kill a person, fast.