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Serotonin is the “don’t worry, be happy” brain chemical that plays a major role in your overall mental health and wellness. Often referred to as the “happiness chemical,” it’s responsible for your mood, sleep, appetite, and general sense of calm. And when your levels drop, your body and mind send some subtle but serious signals that you are having low serotonin. But the first step to addressing hormonal imbalances is to understand the lesser-known symptoms of low serotonin, and more importantly, what you can do to gently restore balance and feel like yourself again.
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What Is Serotonin?
Serotonin is a powerful neurotransmitter that helps regulate many of the things that make us feel balanced and emotionally well—like mood, confidence, sleep, appetite, and even how connected we feel to others. It’s often referred to as one of the “happiness hormones” because of the calming, stabilizing effect it has on the brain and body.
When serotonin levels are low, you may start to notice subtle but frustrating shifts: your mood dips, you feel less optimistic, social situations become draining, and sleep might feel less restful. You may even find yourself reaching for comfort foods or feeling unusually anxious for no clear reason. These symptoms are just your body’s way of signaling that something’s off.
Signs Your Serotonin Might Be Low
This happy hormone does a lot of behind-the-scenes work to help you feel emotionally stable, mentally clear, and physically well. When levels dip, your body and mind can respond in ways that are easy to dismiss at first—but over time, these symptoms can quietly start to take a toll. Here are some signs that may point to low serotonin activity:
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