Feeling anxious is something many of us understand all too well. In fact, according to the National Institute for Mental Health, more than 30% of US adults will experience anxiety at some point in their lives. Whether you’re dealing with generalized anxiety, social anxiety, or panic disorder, you’re probably familiar with the usual advice: therapy, medication, self-care. But what if there’s another, lesser-known piece to the puzzle? Enter choline—a nutrient that’s starting to gain attention for its potential connection to mental health.
As a registered dietitian, I’m always exploring how evidence-based nutrition supports overall health, including mental well-being. Recently, a major study found a link between choline levels in the brain and anxiety disorders. So what does this mean for you? Let’s break it down: what you need to know, how this nutrient might impact your mental health, and simple ways to boost your choline intake.
What is choline?
Before digging into the study, let’s get familiar with choline—a nutrient your body needs for cell structure, DNA production, and nerve function. It’s also the foundation for acetylcholine, a neurotransmitter that helps regulate mood, memory, and muscle control. While your liver makes some choline on its own, most of it must come from outside sources, like your diet.
Choline and anxiety: What the research shows
Recent advances in brain imaging have given researchers new tools to study anxiety disorders. Using a technique called proton magnetic resonance spectroscopy (1H-MRS), scientists can measure brain chemicals in real time. One in-depth meta-analysis of over 20 studies that was recently published in Molecular Psychology revealed something intriguing: People with anxiety disorders consistently had lower levels of total choline-containing compounds (tCho) in key areas of the brain, including the prefrontal cortex.
Why does this matter? The prefrontal cortex is like the brain’s command center: It helps with decision-making and regulates fear and stress responses. When choline levels are lower in this region, it might make it harder for your “thinking brain” to step in and calm the signals from your “anxious brain.” What’s more, this reduction in choline levels was observed across various types of anxiety disorders, suggesting it’s a common thread and not tied to just one specific condition.
So why might choline be lower in people with anxiety? According to the researchers, one theory is that the brain’s heightened state during chronic anxiety burns through choline at a faster rate, using its stores to repair cells and support nerve function. Since choline must be replenished through food, a deficit may contribute to ongoing imbalances in the brain.
What this means (and doesn’t)
It’s important to keep things in perspective when interpreting this research. We can see a link between low brain choline and anxiety, but not a direct cause and effect relationship. Because of that, we can’t say if low choline causes anxiety or is simply an effect of ongoing anxiety. That said, most of us aren’t meeting the recommended choline intake anyway, and this nutrient does far more than potentially impact anxiety: It plays a key role in brain health, cell structure, and even liver function, making it worth prioritizing in your diet regardless.
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