Day: December 11, 2019

Raise your hand if you hated AP Chemistry in high school.

How about Organic Chem in college? Raise your hand if that course nearly derailed your chosen major or served as a weed-out course at your school. (Confession: I actually didn’t have to take Organic Chem. I got college credit from my AP exam, and only had to take Science for Elementary School Teachers [not the actual course title] once I got to college. My husband majored in Bio and minored in Chem because he was pre-med, and the way he tells it Organic Chemistry was the class that made people decide how badly they reallllly wanted to pursue a career in medicine.)

So look: I don’t know much about chemistry. But I do know a couple of things about this little guy right here:

blackboard sketch of serotonin molecule

Serotonin. This neurotransmitter* keeps our brains happy and healthy. It plays a role in our sleep cycles, moods, social impulses, memory, appetite, and even libido.

One of the things I do remember vividly from my (single, solitary, high school) chemistry class is the visual image of how neurotransmitters work. It’s like a lock in a key: our bodies release the key –the substance (in this case, serotonin) that is designed to fit precisely into receptor cells—the lock. When you’re deficient in serotonin, you have a bunch of empty locks, and a certain set of symptoms develops that is your body’s way of warning you: “We need more serotonin.”

You can boost your serotonin in natural ways, like changing your diet & exercise routines, light exposure or talk therapy, or by taking certain medications, if your body isn’t producing enough on its own.

Now unfortunately, what happens sometimes is that people turn to other substances to fill those empty locks. Some drugs work by mimicking our natural brain chemistry, and when we are talking about medications under a doctor’s supervision that can be a good thing. But if we abuse substances that mimic serotonin (for example, LSD or the THC in cannabis) then we are filling those locks with a synthetic “key” that may do way more harm than good.

illustration of lock-and-key brain chemistry mechanism

Our bodies can get the message, “we don’t need to make anymore serotonin, we have enough.” So by putting the wrong thing in the lock, we create a fault in the system — then we have too much of the real neurotransmitter in our bloodstream with no lock to attach to, or we have not enough because we’ve turned off the production. (That’s a really rough explanation of how illegal drugs work. Get a much more robust explanation here.)

Key to My Heart

I don’t know much about chemistry. But I do know just a little about the way God wired me,

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Meet the author


I write uplifting women’s fiction woven with threads of faith, grace, and Southern hospitality. My blog is where I share a glimpse of my life, and I hope you’ll find the thoughts here encouraging!






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