You cannot be aware of this because you can't articulate a very large number of different things at the same time in language, and we are biased to think of our language sense or internal monologue as our consciousness. Images of porcelain cups could be mixed with images of trophies and athletic supporters and measuring containers for cooking, etc. Images are processed and experienced in the visual center. So the development of language with it's various mathematical rules creates another kind of switchboard of the brain because all of these various regions of neurological processing are involved along with the words that are used and experienced. So language is a very busy switchboard, but it just serves to enlarge the connections going through the emotional switchboard as well.
Language has a very large auditory component.
It is something you hear and something you articulate. So the vocal apparatus and the hearing apparatus of the nervous system will have a lot of connections to language and have a statistical proportion of the stress the can be communicated that way. I'm explaining this in a simplistic manner because too much detail will just make your brain explode if you try to compute it all at once. The bulk of symptoms will be emotional in a population. The mechanisms I explained about the nature of increasing stress in a previous essay affect short-term learning and memory recall and control of focus first, so those are the first problems to occur and likely in the greatest part of a population and most likely to occur with old age.