It’s not news exactly, we’ve known this for some time.
Your sense of smell can measure the health
of your brain. It makes sense becaus smell is so deeply embedded in the
most primitive parts of your mind, that for something to go wrong there, shows
there is something wrong in those most basic parts, which especially includes
the memory.
Whereas other senses do most of their activity in their
respective cortices, or info-processing areas of the brain, like the visual
cortex, smell has no cortex. It is “processed” by the limbic system itself, and
the limbic system, named for its control of the limbs and thus motility, is
really at the base of our neural schematic. You could lose your Broca or
Wernicke areas of your brain, the parts that deal with speaking and decoding
language, and your life would take a hit, sure – but if you lost a part of your
limbic system, you probably wouldn’t have much of a life at all. (Although
there are plenty of exceptions to this rule.)
My friend’s mom recently told me about how she’s getting
phantom smells – smelling stuff when it’s not there. This could be caused by
all kinds of things, really, but as she is approaching 70 years old, I told her
to take that as a reminder to check her mental health. I think her olfactory phantoms
(Ren and Stimpy called them “nose goblins,” just kidding) have since subsided,
but it’s a story of caution to anyone getting to that age, or those with
parents etc. who are.
Let’s make sure not to confuse this: people with anosmia,
or the inability to smell, do not automatically have mental illness. It’s when
people with functioning olfactory systems suddenly get changes to them that
there should be concern (and especially when they’re 60 or older).
And finally, I always thought, what does this mean for
me, a guy self-diagnosed with pseudo hyperosmia? I think I have a strong sense
of smell, although it’s measurably the same as other people, I pay attention to
it more, and it does weird things to my brain, not gonna lie. For example,
freshly baked bread, spoiled mushrooms, and rotten fish are all related as
smells, they really are, says science, but also my nose-brain told me. Problem
is, sometimes I can’t tell if I’m really smelling something, or if I’m just
going crazy (because I often smell things others can’t, which is sometimes
called hallucinating, and which is a prime ingredient for feeling crazy). You
better believe I’m getting one of these tests in 20 years.
Notes:
CTV News, July 2016
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