
Stress and anxiety suppresses immunity and so does poor sleep. One root cause of anxiety and poor sleep can be low GABA (gamma-aminobutyric acid) levels. When you boost low levels of GABA (the neurotransmitter) with the amino acid GABA (it has the same name as the neurotransmitter) or theanine (another amino acid), you feel calmer and you sleep better, and you indirectly support your immune function too. We also have research that directly supports the role that GABA and theanine may play when it comes to improving immune function.
This paper, Psychological Stress, Immunity, and the Effects on Indigenous Microflora, describes the field of PsychoNeuroImmunology which
has clearly demonstrated that the physiological response to psychological stressors can dramatically impact the functioning of the immune system, thus identifying one way in which susceptibility to or severity of diseases are exacerbated during stressful periods.
It’s important that we keep all this in mind as we deal with the coronavirus pandemic and during other times when we may be exposed to infections.
The authors also share that psychological stressors impact the microbiome contributing to increases in markers of inflammation even when there is no infection. As you may recall from the recent Anxiety Summit 5: Gut-Brain Axis there is a bidirectional communication between the gut and the brain, with poor gut health having a direct impact on anxiety levels.
The sleep-immunity connection
Here is some of the research supporting the sleep and immunity connection:
Sleep is considered an important modulator of the immune response. Thus, a lack of sleep can weaken immunity, increasing organism susceptibility to infection.
Sleep abnormalities affect immune function in a reciprocal manner, leading to changes in proinflammatory cytokines, such as tumor necrosis factor, interleukins 1 and 6, and C-reactive protein. The multitude of systems that react to sleep loss suggest effects beyond the central nervous system and include total body functioning.
The GABA and theanine anxiety-immunity connection
Here is some of the research supporting the more direct role GABA and theanine may play when it comes to immune function (and act as a relaxant and anti-stress nutrient at the same time):
GABA could work effectively as a natural relaxant and its effects could be seen within 1 hour of its administration to induce relaxation and diminish anxiety. Moreover, GABA administration could enhance immunity under stress conditions.
A number of recent studies have suggested that theanine administration can improve the body’s immune system….one particular study highlighted the use of theanine as an intervention to decrease the incidence of upper respiratory tract infection symptoms via enhancing gamma and delta T-lymphocyte function.
The authors cite one study where “administration of 200 mg theanine was found to have an “anti-stress” effect on pharmacy students” and “regulate dopamine and serotonin levels in the brain through the release of the inhibitory neurotransmitter GABA.”
In summary, anxiety and sleep deprivation are not good for your immunity, and theanine and GABA can ease anxiety, improve sleep AND enhance immunity.
The low GABA type of anxiety
When you have the low GABA type of anxiety you’ll feel physically tense and overwhelmed, fearful and not be sleeping well. You may lie in bed stiff and tense and may also have unwanted thoughts and experience monkey-mind. It’s common to self-medicate with alcohol to stay calm or you may also use carbs to relax. When you use the amino acid supplement GABA, you get quick and very effective relief – when it’s used sublingually.
Already using GABA/theanine or have used it in the past?
If you are already using GABA or theanine you may find you need extra during this time of added stress. You don’t want to make the mistake of thinking “This is serious, I need to double-up.” The best approach is to monitor your low GABA symptoms and consider using an extra dose during the day or possibly more at night or possibly more at each dose. Use the trial method to monitor your response.
Someone in my facebook community said she was conserving her GABA and noticed her anxiety was creeping back up. Now is not the time to cut back on GABA.
If you’ve found benefit from GABA or theanine in the past but are not currently using it you may very likely feel the need for the additional support right now.
Additional resources when you are new to using GABA or other amino acids as supplements
We use the symptoms questionnaire to figure out if low GABA (indicating a possible need for GABA or theanine) or low serotonin (indicating a need for tryptophan or 5-HTP) or low endorphins (indicating a possible need for DPA) or other neurotransmitter imbalances may be an issue for you.
If you suspect low levels of any of the neurotransmitters and do not yet have my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings. I highly recommend getting it and reading it before jumping in and using amino acids on your own so you are knowledgeable. And be sure to share it with the practitioner/health team you or your loved one is working with.
There is an entire chapter on the amino acids and they are discussed throughout the book in the sections on gut health, gluten, blood sugar control, sugar cravings, anxiety and mood issues. The importance of quality animal protein and healthy fats is also covered.
The book doesn’t include product names (per the publisher’s request) so this blog, The Antianxiety Food Solution Amino Acid and Pyroluria Supplements, lists the amino acids that I use with my individual clients and those in my group programs.
If, after reading this blog and my book, you don’t feel comfortable figuring things out on your own (i.e. doing the symptoms questionnaire and respective amino acids trials), a good place to get help is the GABA QuickStart Program (if you have low GABA symptoms). This is a paid online/virtual group program where you get my guidance and community support. Another option is the budget-friendly GABA QuickStart Homestudy Program.
If you also need serotonin support, the Serotonin QuickStart Program is a good place to get help. This is also a paid online/virtual group program where you get my guidance on using tryptophan and 5-HTP safely, and community support during 5 LIVE Q&A calls. You can sign up to be notified when the next live launch of this program is happening.
If you are a practitioner, join us in The Balancing Neurotransmitters: the Fundamentals program. This is also a paid online/virtual program with an opportunity to interact with me and other practitioners who are also using the amino acids.
Now I’d love to hear from you…
Let us know if you were aware of the connections to immune function and if you’ve noticed your immune system is stronger when using GABA or theanine?
How do these amino acids help ease your anxiety and improve your sleep?
Please share your other experiences with GABA and theanine and feel free to ask questions below.


