It's late, you're exhausted, and yet your mind simply will not stop. You're wired and tired at the same time, too depleted to function but too switched-on to rest. That restless feeling is not a character flaw, and it is not something you're stuck with. It traces back to a single calming system built right into your brain, and you have far more control over it than anyone ever told you.
GABA, or gamma-aminobutyric acid, is the brain’s main calming messenger. Understanding how it works may be one of the most useful things you can learn about your own calm. Let me introduce you to your brain’s own off switch, and then show you the evidence-backed ways to help it work better.
What GABA Actually Does
Your brain runs on a constant balance between two opposing forces. On one side is glutamate, the main excitatory messenger, the one that revs neurons up, fires you into action, and keeps you alert. On the other side is GABA, the main inhibitory messenger, the one that calms neurons down and tells them to slow their firing. Think of glutamate as the accelerator and GABA as the brakes. A healthy, steady mind depends on having both.
When GABA is doing its job well, the effect is a kind of settled ease. Racing thoughts slow to a manageable pace and the nervous system shifts out of high alert. You feel calm rather than anxious, and at night you can let go enough to fall and stay asleep. GABA is the reason a busy brain can quiet itself.
When GABA activity runs low, the opposite happens. Neurons fire too freely, and that overactivity can show up as restlessness, tension, and trouble sleeping. It’s the feeling of a mind that won’t stop, a body that can’t settle. Many women describe it perfectly as wired but tired.
Why GABA Matters So Much for Women
GABA does not operate in isolation from the rest of your biology. It is deeply tied to your hormones, which means the calming system itself can shift with the very transitions that define so much of women’s lives.
One hormone in particular, progesterone, is a key partner to GABA. Progesterone breaks down in the body into a compound that enhances GABA’s calming effect, which is part of why balanced progesterone can feel so soothing. As progesterone rises and falls across the monthly cycle, and as it drops during perimenopause and menopause, GABA’s calming influence can waver with it.
When we talk about supporting your GABA system, we are really talking about supporting the calm, the sleep, and the steadiness that hormonal transitions can quietly erode.
How to Support Your Natural GABA Activity
Your GABA activity is not fixed, a growing body of research shows that everyday habits can meaningfully support how well this calming system works. Taking supplements along with other daily habits are things you can begin today.
Yoga, and the 27 percent surprise
This is my favorite finding, because it is so striking. Using brain-imaging that measures neurotransmitter levels in living tissue, researchers found that a single 60-minute yoga session was associated with roughly a 27 percent increase in brain GABA levels, compared with a group who spent the same hour reading. Of all the natural approaches, yoga and mindful movement carry some of the strongest direct evidence for lifting GABA activity. Your calm, it turns out, can respond to a single class.
Regular exercise
Physical activity more broadly is one of the most reliable ways to support inhibitory, calming activity in the brain. Even relatively short sessions of aerobic exercise have been shown to raise GABA and its precursor, and consistent movement helps counter the neurotransmitter depletion that chronic stress causes. Part of why a walk or a workout leaves you calmer may be GABA itself.
Deep sleep, in a healthy loop
The relationship between GABA and sleep runs both directions. GABA helps you fall asleep and regulates the deep, slow-wave sleep that restores you. That restorative sleep helps your brain rebalance its neurotransmitters, including GABA. Protecting your sleep protects the very system that makes sleep possible and chronic sleep loss frays it.
Meditation and slow breathing
Mindfulness meditation, slow diaphragmatic breathing, and similar practices shift your nervous system out of its overactive, sympathetic state and into the calmer parasympathetic one. Done consistently, these practices are associated with greater GABA activity. A few quiet minutes of slow breathing is a real, physiological nudge to your calming system, not just a nice idea.
The nutrients your GABA system relies on
GABA is derived from the amino acid glutamate, using an enzyme that depends on vitamin B6 as a cofactor. Magnesium helps that GABA-making enzyme work, and it binds to and supports your GABA receptors so the calming signal lands more effectively. In other words, magnesium is one of the nutrients that helps GABA do its job, this is part of why magnesium is so often linked to relaxation and better sleep.
Fermented foods and the gut connection
Certain beneficial gut bacteria actually produce GABA themselves, and the gut communicates with the brain along the vagus nerve. Fermented foods like kimchi, miso, tempeh, kefir, and yogurt introduce these GABA-producing microbes, and higher intake of fermented foods has been associated with lower anxiety in population studies. Your calm may depend, in part, on the health of your gut.
| Natural Approach | How it supports you GABA system |
| Yoga & mindful movement | Linked to a marked rise in brain GABA, with some of the strongest direct evidence |
| Regular exercise | Raises GABA and counters the depletion caused by chronic stress |
| Deep, consistent sleep | Helps the brain rebalance GABA, in a reinforcing loop with calm |
| Meditation & slow breathing | Shifts the nervous system into its calmer state and supports GABA activity |
| Magnesium & vitamin B6 | Serve as cofactors for making GABA and help your GABA receptors work |
| Fermented foods | Introduce gut microbes that produce GABA and signal calm to the brain |
Frequently Asked Questions
What does GABA do in the body?
GABA is the brain’s main calming, or inhibitory, neurotransmitter. It slows down overactive neurons, which helps you feel calm rather than anxious, quiets racing thoughts, and supports falling and staying asleep. It is the counterbalance to glutamate, the brain’s main excitatory signal.
What are signs of low GABA activity?
When GABA activity is low, people often describe feeling anxious, restless, tense, or unable to switch off, along with trouble sleeping and that “wired but tired” sensation. Because many things affect this, these signs are not a diagnosis, but they are the general picture of a nervous system that struggles to settle.
Why does GABA matter more for women during menopause?
GABA is closely tied to progesterone, which breaks down into a compound that boosts GABA’s calming effect. As progesterone falls during perimenopause and menopause, GABA’s soothing influence can waver, which helps explain why calm and sleep can become harder to hold onto during these transitions.
How can I increase GABA naturally?
The best-supported approaches are lifestyle-based: yoga and mindful movement, regular exercise, consistent deep sleep, meditation and slow breathing, and nutrients like magnesium and vitamin B6 that your body uses to make and use GABA. Fermented foods may help too, through the gut-brain connection.
Does yoga really raise GABA?
Research using brain imaging found that a single 60-minute yoga session was associated with a notable increase in brain GABA compared with reading for the same time. It is one of the more striking findings in this area and a reason yoga is so often linked with calm.
The Bottom Line
I love the idea that calm is not something you simply have or lack, but something your body actively creates. GABA is your brain’s built-in off switch, the brake that lets a busy, noisy mind grow quiet enough to focus, to soften, and to sleep. It is especially worth understanding for women, because it moves with the hormones that shape so much of our lives.
The most powerful part is how much say you have. Move your body, breathe slowly, protect your sleep, and give yourself the nutrients your calming system runs on. You are not at the mercy of a restless mind. You have a hand on your own brakes, and now you know where to find them.
To your calm,
Naomi
References (Peer-Reviewed Studies & Reviews)
1. Streeter CC, Jensen JE, Perlmutter RM, et al. Yoga Asana sessions increase brain GABA levels: a pilot study. J Altern Complement Med. 2007;13(4):419–426.
2. Streeter CC, Whitfield TH, Owen L, et al. Effects of yoga versus walking on mood, anxiety, and brain GABA levels. J Altern Complement Med. 2010;16(11):1145–1152.
3. Maddock RJ, Casazza GA, Fernandez DH, Maddock MI. Acute modulation of cortical glutamate and GABA content by physical activity. J Neurosci. 2016;36(8):2449–2457.
4. Boonstra E, de Kleijn R, Colzato LS, et al. Neurotransmitters as food supplements: the effects of GABA on brain and behavior. Front Psychol. 2015;6:1520.
5. Hepsomali P, Groeger JA, Nishihira J, Scholey A. Effects of oral gamma-aminobutyric acid (GABA) administration on stress and sleep in humans: a systematic review. Front Neurosci. 2020;14:923.
6. Abdou AM, Higashiguchi S, Horie K, et al. Relaxation and immunity enhancement effects of GABA administration in humans. Biofactors. 2006;26(3):201–208.
7. Boyle NB, Lawton C, Dye L. The effects of magnesium supplementation on subjective anxiety and stress: a systematic review. Nutrients. 2017;9(5):429.
This article is for educational purposes only and is not a substitute for personalized medical advice. If you are experiencing persistent anxiety, sleeplessness, or mood changes, please speak with a qualified healthcare provider. Always consult your provider before starting a new supplement, especially if you are pregnant or nursing, take medication, or have a medical condition.
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