How Does Alcohol Affect Serotonin?
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What is happiness? Now there’s a head-scratcher. This seemingly simple yet infinitely complex question has boggled the minds of ancient philosophers, psychologists, fantasy novel writers, and spiritual seekers alike.
Unfortunately, it’s also a question that can lead us astray once “happiness-boosting” substances such as alcohol come into the picture. Creating joy on demand is tricky business, and we can inadvertently end up in dangerous waters, especially if we’re not careful about how we drink or what we mix with alcohol.
As far as the brain is concerned, however, it all comes down to neurochemicals, with serotonin taking center stage. How does alcohol affect serotonin? And how can it contribute to the potentially dangerous serotonin syndrome? Let’s find out!
Serotonin is a neurotransmitter — a molecule that acts as a chemical messenger, helping neurons communicate with one another. But did you know that only about 10% of serotonin is actually produced in the brain? That’s right — 90% of this essential chemical is found “downstairs,” in the gut, where it acts as a hormone.
While serotonin is best known for its role in those happy emotions we all know and love, it actually has a range of functions in the body. Here’s an overview:
With so much on its task list, serotonin is one busy chemical. It’s no wonder that any disruptions to its normal functioning can wreak havoc on the body and mind. Low serotonin levels can lead to anxiety, depression, and problems with digestion and sleep. Scientists and doctors have found a number of solutions that can help, ranging from getting more sunlight and exercise to taking antidepressants that increase serotonin levels, often by keeping them from getting cleared out of nerve synapses.
Serotonin is produced from tryptophan, an essential amino acid that can’t be produced from scratch and must come from the foods we eat. Some good tryptophan sources? Animal proteins, as well as legumes, nuts, seeds, and whole grains.
But what about alcohol? How does it factor into the picture?
Alcohol and serotonin have a complex relationship. Let’s explore it in more detail.
While dopamine — the “reward” neurotransmitter — usually gets mentioned first when it comes to the “happy chemicals” alcohol enhances, serotonin is an important part of the picture. Drinking boosts our levels of serotonin, with a single drinking session being enough to cause a noticeable shift. That warm, fuzzy, “I just love everyone in this room” kind of feeling? That’s serotonin in action. However, this effect is temporary. Plus, there’s often a rebound effect the next day as serotonin levels fall, contributing to that “blah” feeling of the morning-after hangover.
In the long term, there’s more potential trouble when it comes to alcohol and serotonin. As the rush of pleasure-inducing neurochemicals (including serotonin) becomes the “new normal,” the brain puts the brakes on its natural production. So those feel-good movies, heart-to-heart conversations with old friends, and cuddles with our Golden Retriever don’t produce the same rush of serotonin they used to in the past.
As a result, the stage is set for alcohol dependence, which develops in part as a response to the neurochemical shifts in the brain. Research supports this: studies show that serotonin transporter densities are reduced in people with alcohol dependence. And while the brain can certainly return to normal, it will take some time. (For a deeper look, check out “Alcohol Misuse and Depression: What’s the Connection?”)
If serotonin is a “happy chemical,” more of it should be a good thing, right? Not so. In fact, when serotonin levels get too high, we can end up with a dangerous (and potentially life-threatening) condition known as serotonin syndrome.
While serotonin syndrome can happen from alcohol alone, it’s much more likely to be triggered by a combination of alcohol and another serotonin-boosting substance. The list of possible culprits is pretty huge. (Note: most of these substances are safe when used as directed. It’s only when we mix them with booze that we run into trouble.)
While substances on this list can cause serotonin syndrome when mixed with alcohol, we should also avoid mixing them with each other. Any combination of serotonin boosters could get us in the danger zone!
So what is serotonin syndrome, scientifically speaking? In short, the serotonin receptors in our central and peripheral nervous system get overwhelmed, leading to an all-out system overload.
Serotonin syndrome symptoms aren’t always catastrophic, but they are important to recognize and address right away, since they can easily escalate. They tend to range from mild to severe.
Never ignore these signs. If you notice them, seek medical help right away!
Treatment for serotonin syndrome symptoms will usually happen in a hospital setting. Here’s what will probably happen should we get there.
Serotonin syndrome is treatable, but it’s crucial to get help in time. Always err on the side of safety!
Here are some tips to avoid the potential dangers that come with alcohol and serotonin-boosting substances.
Don’t hesitate to ask your doctor or pharmacist if you have questions about medication interactions or possible reactions with alcohol. Safety is key!
Finally, did you know that there are plenty of ways to boost serotonin naturally? Here are a few go-tos that are scientifically proven to work.
There are plenty of ways to tap into the natural serotonin-producing powers of our brain. It’s designed for it!
To sum up our discussion of serotonin, let’s get philosophical again for a moment. True happiness gives life that spark that makes us excited to get up in the morning and gives us memories we can treasure when things get difficult. But it can’t be found in a substance like alcohol — at best, all that we end up with is an illusion.
As Karen Weinreb writes in The Summer Kitchen, “Happiness is the greatest paradox of nature … It comes from within … Happiness consists not of having, but of being; not of possessing, but of enjoying … Happiness is the soul's joy in the possession of the intangible. It is the warm glow of a heart at peace with itself.” So let’s let it glow the way it’s meant to, booze-free!
1. What is serotonin and why is it important?
Serotonin is a neurotransmitter that plays a crucial role in mood regulation, digestion, sleep, wound healing, pain management, and bone health. About 90% of it is produced in the gut. It's often referred to as "the happy chemical" due to its association with well-being and happiness.
2. What’s the connection between alcohol and serotonin levels in the short term?
Alcohol temporarily boosts serotonin levels, leading to feelings of happiness. However, this effect is short-lived and can lead to a decrease in serotonin levels the next day.
3. What are the long-term effects of alcohol on serotonin?
Over time, regular alcohol consumption can disrupt the natural production of serotonin, leading to reduced sensitivity to the neurotransmitter. This can set the stage for alcohol dependence and a decreased ability to feel pleasure from normally enjoyable activities.
4. What is serotonin syndrome and how can alcohol contribute to it?
Serotonin syndrome is a potentially life-threatening condition caused by excessively high levels of serotonin. It can be triggered by mixing alcohol with other substances that increase serotonin levels, such as SSRIs, certain antidepressants, and recreational drugs.
5. How can serotonin levels be naturally boosted?
Natural ways to boost serotonin include spending time with loved ones, eating a diet rich in tryptophan (from sources like animal proteins, legumes, and nuts), exercising, and spending time outside in natural light.
6. What’s the SSRI, alcohol, and serotonin syndrome connection?
SSRIs are medications used to increase the levels of serotonin, a mood-regulating neurotransmitter in the brain. Alcohol increases serotonin levels as well, so combining it with SSRIs can cause a dangerous spike in serotonin levels, leading to serotonin syndrome.
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