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What Are The Symptoms of Low GABA? And Your Toolkit To Recovery

Life is stressful for many of us and our general anxiety levels are higher than ever. 

Adapting to a fast-paced, interconnected world is a significant source of stress and anxiety for us all. And while a little stress is a good thing, chronic stress can build up to leave you feeling anxious, burned out, short-tempered and depressed. 

There are signs of what is happening inside your body — and in particular, your brain — when you’re stressed. 

Research has shown how living with constant fear and anxiety is actively disrupting your brain chemistry and damaging brain cells, resulting in physically altered brain structures and accelerated brain ageing.

It has revealed that the outward signs of stress are just the tip of the iceberg, with much more going on beneath the surface. 

In fact, stress has been shown to actually change your brain’s structure.

Stress is especially damaging to your amygdala, an almond-shaped region of the brain that regulates basic emotions, such as fear and anxiety. 

Exposure to prolonged stress can cause structural changes in your amygdala. 

These changes have been linked to behaviours associated with anxiety and depressive disorders.


When you are stressed your amygdala responds with your fight, flight, freeze response. With chronic stress and trauma your amygdala can become permanently switched on. Your brain and body become hyper-aroused as your brain constantly scans for threats.


This impacts levels of nutrients and neurotransmitters in your brain as your body uses up ingredients quickly to make all the chemicals of your stress response.


GABA is the key to switching off this response.


One way to calm your amygdala and rewire your anxious brain is to have a tool kit at hand that boosts your GABA levels.


What are the benefits of GABA?


When you experience stress, your amygdala triggers your adrenal glands to produce hormones that we know as fight-or-flight responses, like speeding up your heartbeat or giving you an adrenaline rush.

GABA counteracts these natural stimulants by relaxing your brain.


Chronic stress uses up glutamine, the main ingredient that you need to make GABA, leading to high levels of anxiety and exhaustion. 




Reduces mental and physical stress

Eases feelings of anxiousness

Decreases muscle tension

Creates a calmness of mood

Supports balanced blood pressure

Helps to induce sleep


So if you often feel worried, tense, overwhelmed or have trouble falling asleep due to racing thoughts, GABA could be the key to calming your mind, soothing your nervous system and helping you power down at night to get a good nights sleep.


Gamma-aminobutyric acid (GABA) is a neurotransmitter, or chemical messenger, in the brain. It blocks specific signals in the central nervous system, calming down the brain. This provides a protective and calming effect on the brain and body.


This activity produces effects such as:


relieving anxiety

reducing stress

improving sleep


The brain naturally releases GABA at the end of a day to promote sleepiness and allow a person to rest.



What is GABA good for?



I call GABA the brakes of the brain.


Specifically, GABA blocks certain nerve signals in the brain to reduce fear, anxiety, and stress. Without the right level of GABA in the body, conditions such as anxiety disorders may become worse. 


A recent study indicates that GABA also enhances alpha wave production in the brain to promote relaxation and moderate occasional stress.


GABA is most often used as an anti-anxiety remedy but has many other reported benefits:


  • Helps with inflammation issues, which means it may provide relief for people with PMS or other conditions that come with chronic pain.


  • Helps with recovery and may increase exercise tolerance.


  • Regulates  muscle tone. 


  • Keeps your body in overall mental and physical balance.


  • Helps with PMS and the menopause as it interacts with progesterone levels.


It’s high concentration in the hypothalamus which is the region of the brain that regulates functions such as sleep cycles, body temperature and the activity of the pituitary gland.

The pituitary gland is the master endocrine gland affecting all hormone functions of the body. 


  • Plays a role in the healthy functioning of the body’s immune and endocrine systems, as well as in the regulation of appetite and metabolism. 


  • Has an important role in our digestive system contributing to gut health and gastrointestinal function. 


  • It works to support motility, control inflammation and support immune system function, and 


  • Helps regulate hormone activity.



How do I know if I am low in GABA?


So what does low GABA look like?


Low GABA levels appear to us in both physical and psychological signs.


A growing body of research shows that low levels of GABA can be a factor in:


Chronic stress

Burn out


Panic attacks


Feel overwhelmed

Easily agitated

Tired but wired

Difficulty concentrating and memory problems


Physical tension and pain

Muscle aches and head aches

Sleeping difficulties

Sensitivity to bright lights and loud sounds

Digestive problems

Carb cravings

Substance use disorders 




What happens if you have low levels of GABA?


GABA stops messages related to extreme moods. In other words, GABA calms your nervous system down, helping you to not become overly anxious or afraid.


The amygdala is an almond-shaped nucleus located within the temporal lobe  of the brain and is thought to play a crucial role in the regulation of emotional processes. 


GABA inhibits the amygdala and prevents us from inappropriate emotional and behavioural responses keeping a balance between neural excitation and inhibition


Problems with GABA signalling play a role in disorders that affect your mental health or your nervous system. These are known as psychiatric and neurologic conditions.


What causes GABA deficiency?


Many things can impact GABA levels, which contribute to deficiency:


1 Prolonged stress 


Research shows coping with stressors both as adult and in and early life can directly influences levels of GABA and it how GABA functions in the body.


2 Genetics


If you have glitches on genes (notably MTHFR) that inhibit the absorption of B vitamins - especially B6 - it is difficult to make high enough levels of neurotransmitters, including GABA.


3 Nutrient deficiencies


Vitamin B6 deficiency is relatively common in the population.

B6 is essential for the production of many neurotransmitters involved in brain health including learning, cognition, mood, and memory. 


Vitamin B6 is a key GABA vitamin.


B6 deficiency has been shown to lead to a decrease in GABA concentration in the brain. GABA is an inhibitory neurotransmitter, so when levels decrease, this leads to an increase in the excitatory neurotransmitter, glutamate.  


Strong evidence suggests that changes in this GABA-Glutamate balance lead to sleep and mood problems, as well as loss of stress control. 


4 Low serotonin levels 


Serotonin is a positive regulator of GABA. Low serotonin levels are frequently an underlying component of many clinical conditions that are also related to GABA function including insomnia, depression, and anxiety.


Neurotransmitter tests show that GABA needs serotonin to function properly.


5 Low progesterone levels


This occurs particularly in the second half of the cycle or pre/post menopausal. 


Progesterone helps with GABA and oestrogen supports serotonin production which is why anxiety and mood fluctuate with hormone and neurotransmitter levels.


6 Low exercise levels

Sedentary lifestyles lower GABA levels. Studies show that exercise activates the metabolic pathway that replenishes neurotransmitters including GABA.

In tests, before and after three vigorous exercise sessions lasting between eight and 20 minutes GABA levels increased in the participants who exercised, but not among non-exercisers. 


How do I increase GABA in my brain?


Foods to eat to increase GABA levels:


green, black, and oolong tea

fermented foods including kefir, yogurt, and tempeh. 

whole grains

fava beans


lentils and other beans

nuts including walnuts, almonds, and sunflower seeds

fish including mackerel, shrimp and halibut

fruit and vegetables including citrus, tomatoes, berries, spinach, broccoli, potatoes and cocoa.



How to increase GABA with supplements?


The 5 best supplements to boost your GABA levels are:


Methylated Vitamin B6






L-theanine is found in tea - especially green tea - and it promotes relaxation and facilitates sleep by contributing to a number of changes in the brain:


  • Boosts levels of GABA, serotonin and dopamine 
  • Promotes sleep
  • Reduces stress chemicals to help with stress and anxiety
  • Enhances alpha brain waves


 L-theanine triggers the production of alpha-waves, which enhance relaxation, focus, and creativity.


 Alpha brain waves are associated with a state of “wakeful relaxation.” That’s the state of mind you experience when meditating, being creative, letting your mind wander in daydreaming or during REM sleep.


Making green tea your drink of choice is a great way to boost your theanine levels.




Magnesium has been shown to modulate GABA activity in the brain. It does this by facilitating GABA neurotransmission and boosting its effects of relaxation. 


Magnesium also helps to relax the central nervous system and your muscles. It does this by helping to activate the parasympathetic nervous system – that is responsible for helping us to rest and digest and reducing cortisol levels.


We can find magnesium in foods such as avocado, nuts and seeds, legumes and some whole grains. Studies have shown that supplementing with magnesium can be very effective in reducing symptoms of anxiety. 


Vitamin B6

GABA is produced via the activity of an enzyme called glutamic acid and GABA, which requires vitamin B6 as a cofactor. 


Studies show that the B6 levels of an individual have significant effects on the central production of both GABA and serotonin neurotransmitters that prevent symptoms of depression and anxiety.


B6 can be found in all animal products, as well as grains, pulses, eggs and dairy.



Gut bacteria including the Bifidobacteria family and by the Lactobacilli family have been shown to produce GABA. 


This further strengthens the increasing evidence for the gut-brain connection and that having a healthy microbiome in your gut is a crucial pillar in brain health.


To balance your mood with foods rich in probiotics and prebiotics try adding these:


1 Chicory, endive, lentils, asparagus, beans, garlic, onions, leeks, bananas, beets, broccoli)

2. All fermented foods

3. Whole fat live yogurt


Other life changes can reduce gut damage + also boost your gut health significantly:


1 Eat more fibre (fresh vegetables, whole fruit, whole grains)

1 Reduce junk + processed food

2 Reduce sugar (high quality maple syrup + honey contain prebiotics)

3 Increase Omega 3 intake (nuts, seeds, oily fish)

4 Drink less alcohol

5 Increase antioxidant foods (berries, turmeric, green tea)


Or add a probiotic containing Bifidobacteria and Lactobacilli strains.






What is L-Glutamine?


Glutamine is a new buzz supplement but if you’re not sure what it’s all about I thought I would write about it from the brain health perspective.


It is the most abundant amino acid in our body and it is a significant building block of protein meaning that your body requires a lot of it.


Your body naturally produces it from foods high in protein like beef, chicken, eggs, fish and beans.


However, many people don’t eat enough protein in their meals leaving your body struggling to produce enough glutamine. And if you are stressed - either physically and psychologically - glutamine will get used up very quickly.


Supplementing with glutamine is an excellent way to ensure your body gets enough glutamine to reduce the effects of stress and function at an optimal level.


Calm Me - All the GABA producing ingredients are in one easy place for you




What are the benefits of taking glutamine?


How L-Glutamine helps reduce symptoms of stress and anxiety


L-Glutamine is the primary fuel used by the brain to build and balance the neurotransmitter GABA which plays a significant role in mood and anxiety.


It is known as the ‘calming amino acid’ for its effectiveness in reducing stress-related anxiety symptoms.


It’s Yoga for the brain.


Chronic stress uses up glutamine leading to high levels of stress and anxiety and our immune system and gut being vulnerable.


Glutamine is the primary fuel source for the sealing and maintaining the lining of the intestines. With a healthy gut lining you can absorb more nutrients, reduce leaky gut and toxins entering our blood stream as well as reduce bloating.


By healing your gut it also helps to boost your immune system. About 60-80% of our immune systems lives in our gut so by having  a healthy gut microbiome you are also strengthening your ability to protect and recover from disease.


It’s pretty amazing how nutrients can help isn’t it?


It’s so crucial to brain health that I put Glutamine in MoodNutritionPlus® which is in every M+E supplement. 


So how do you fix GABA deficiency?


I’m often asked how to increase GABA so thought I would put together a few tools to help you recharge your GABA levels.






5 Ways to Increase GABA


1. How to increase GABA with supplements?




Methylated Vitamin B6





All the GABA producing ingredients are in one easy place in 

Calm Me



2. De-stress with meditation or yoga


Many studies have shown that meditation and meditative movement practices like yoga or tai chi have scientifically confirmed benefits, including increasing GABA and easing stress and anxiousness.


Research has also shown that people who meditate have increased levels of GABA and reduced levels of the stress hormone cortisol.

There are lots of free guided meditations on Apps and on YouTube so have a search, try a few and find one that works for you.


If you struggle to meditate think about the activities that help your brain get into a relaxed state - like walking, reading, listening to music, podcasts, audiobooks, cooking, art, cleaning - and these can be your meditation.


3. Get moving to boost GABA.


In addition to its well-known stress relief benefits, regular exercise helps to increase GABA in the brain. 


Low impact cardiovascular activities are the best: nothing beats a good long walk.


Bringing to a consistent exercise routine into your life can help increase your GABA levels over time. 


Forest bathing and walking in blue or green spaces, especially the sea side or evergreen woodlands, are fantastic ways to boost your GABA levels and destress. Phytoncides are emitted by plants and are absorbed through our skin and lungs to help reduce cortisol, boost GABA and help us to relax.


4. Eat foods that contain GABA or support its production.


GABA is produced in your brain from glutamate, another amino acid that is generally abundant in the human diet. It’s found in particularly high concentrations in these foods:


Aged, cured and preserved foods, including cheeses and meats

Slow-cooked meats and poultry

Bone broths









5. Vagus nerve stimulation


The vagus nerve system acts to counterbalance the fight or flight system and can trigger a relaxation response in our body. It is one of the cranial nerves that connects the brain to the body. 


The vagus nerve is a major part of how our bodies and brains function and by stimulating it you can boost the GABA in your brain.


Here are some of the best ways to stimulate your vagus nerve:


Deep belly breathing

Square breathing

Nadi Shodhana: Alternate nostril breathing is balancing for the nervous system and promotes GABA release. 

  1. Sit in a relaxed position. 
  2. Close one nostril with index finger of one hand. 
  3. Exhale fully and inhale extending lower stomach outward.
  4. Switch nostrils with same finger and exhale from lower stomach. 
  5. Inhale a deep breath into your lower stomach.
  6. Switch nostrils after the inhale breath with the same finger and exhale fully. 
  7. Inhale and repeat, always switching nostrils after the inhale breath. 
  8. Repeat for 4-5 minutes. 




Ear massage

Foot massage 

Cold water showers/swimming

High fibre diet


Can you bring more of these into your everyday life?


It’s pretty amazing how we can help ourselves if we have a guide isn’t it?


You might think that you just have to accept that stress and anxiety are simply part of your life. 


But you don’t have to.


You can make a change.


How do you fix GABA deficiency?


Take glutamine, thiamine and vitamin B6

Get outside to Exercise

Do some Yoga

Breathing exercises 

Eat GABA foods



If you would like to read more about the emotional side of stress and what you can do to help yourself there’s lots of help in my most popular blog called:


Why Am I Always So tired


Use this tool kit to make small changes to your routine and 

your health and your life will feel transformed.


You can reduce your stress, have abundant energy and joy will come back into your life.


We all tend to eat the same sorts of foods each week which means that over time we start to miss some crucial nutrients.


 It means that we end up with deficiencies and gaps without even realising it. This has a huge impact on how our bodies and brains work. We adjust and just think that it is our normal. It’s just what we have to put up with.


But this isn’t the case. You can make a change.


That’s where a high quality supplement can help fix the deficiencies, fill the gaps and help to optimise your brain health.


“For me, taking supplements is about optimising your current and future health. Where some see supplements, I see a happier future"


Your health and your life feels transformed.


You can reduce your stress, have abundant energy and joy comes back into our lives.


How you feel tomorrow, starts today.


Let’s start,






Anxiety disorders and GABA neurotransmission: a disturbance of modulation



Effects of Yoga Versus Walking on Mood, Anxiety, and Brain GABA Levels



Effect of Acute Psychological Stress on Prefrontal GABA Concentration





The Impact of Glutamine supplementation


Glutamine increases GABA


The effects of Magnesium on stress


Long term stress reduction with magnesium



Nutritional and herbal supplements for anxiety and anxiety-related disorders: systematic review


Vitamin B6


Psychobiotics and the Manipulation of Bacteria–Gut–Brain Signals


Probiotics and GABA


The Influence of Micronutrients on cognitive Function and Performance


Ingestion of Lactobacillus strain regulates emotional behavior and central GABA receptor expression in a mouse via the vagus nerve


Stress in Regulation of GABA Amygdala System and Relevance to Neuropsychiatric Diseases

As seen in