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Gelatin triggers Enid’s anxiety in 2 weeks but also lowers her high blood sugar

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gelatin anxiety blood sugar

Are you aware that collagen and gelatin lower serotonin and may increase your anxiety and depression and worsen sleep? I blogged about this in 2017 and how susceptible individuals who are prone to low serotonin need to be aware of this and use 5-HTP or tryptophan to counter these effects. (You can read that blog here: Collagen and gelatin lower serotonin: does this increase your anxiety and depression?)

I’m sharing an example today from one of the many comments on the above blog as a reminder or in case this is new to you. It’s not well-recognized as being an issue even amongst practitioners and producers of collagen. This is also one of my most commented-on blogs so it’s clearly a big issue. And gelatin and collagen continue to become more and more popular.

As a reminder, gelatin is derived from collagen: when collagen breaks down, it becomes gelatin. Also, collagen and gelatin are an excellent source of these amino acids: proline, glycine, glutamine and arginine, but they do not contain the amino acid tryptophan, so they have the potential to lower serotonin levels.

Tryptophan-depletion studies have been done for years – using a tryptophan-deficient amino acid mixture – as a way to study the relationship between low serotonin and depression.

More recently, collagen and gelatin are being used in these tryptophan-depletion studies because they do not contain the amino acid tryptophan. This paper, Pharmacokinetics of acute tryptophan depletion using a gelatin-based protein in male and female Wistar rats, summarizes what we find in a number of studies that use gelatin for the purpose of lowering serotonin levels (in order to study the relationship between serotonin and mood issues):

The essential amino acid tryptophan is the precursor of the neurotransmitter serotonin. By depleting the body of tryptophan, brain tryptophan and serotonin levels are temporarily reduced.

What does this mean? If you consume gelatin or collagen, you end up depleting the body of tryptophan and serotonin levels are reduced for a short time. This can cause the classic low serotonin symptoms of anxiety, worry, panic attacks, fears, phobias, insomnia, PMS, afternoon and evening carb cravings, TMJ, PMS and even anger issues and obsessions/ruminations.

For Enid, adding gelatin to her weight-loss shake powder triggered the anxiety she used to experience:

I wanted to give you a sincere thanks for all the work you’ve done on this blog and for studying collagen and serotonin. I have been taking quite a bit of gelatin because I started a medically supervised weight-loss program a month ago and was adding the shake powder to gelatin to thicken it. I have a long history of anxiety but it has been better for several years. However, I have been really concerned because my heart hurts with anxiety like I used to have. So your article and the follow up comments have helped me since I would have continued to eat a lot of it But now I will stop. So thank you.

Edid also shared how the gelatin she was consuming lowered her blood sugar in 2 weeks:

What’s interesting is in 2 weeks of being on the diet and eating a lot of gelatin my glucose went from 190 (which is diabetes) to 113 which is perfectly normal. I’ve read that collagen lowers blood sugar. So hopefully it will stay down even after stopping eating gelatin.

I found it very interesting to learn about Enid’s lowered glucose and that it went down so much in just 2 weeks.

So I went looking into the research and found this paper, Therapeutic effects of marine collagen peptides on Chinese patients with type 2 diabetes mellitus and primary hypertension, stating that marine collagen “significantly reduced levels of fasting blood glucose.” The study concluded that marine collagen:

may benefit glucose and lipid metabolism, insulin sensitivity, renal function and hypertension management in Chinese patients with T2DM [type 2 diabetes] and hypertension.

This research is new to me and is a good reason to continue with gelatin or collagen and address why it’s causing her anxiety to ramp again after just 2 weeks.

My message in this blog post – Collagen and gelatin lower serotonin: does this increase your anxiety and depression? – is not to stop gelatin or collagen, but rather help you to figure out if your consumption of collagen or gelatin is causing your anxiety, depression or insomnia (or other low serotonin symptoms), or making it worse.

Once you have made this connection then you need to figure out what the mechanism is. The fact that the consumption of collagen and gelatin lower serotonin is one possible factor for susceptible folks. The easiest way to figure out if it is low serotonin for you is to do a trial of tryptophan or 5-HTP while continuing to consume gelatin or collagen and see if your new symptoms resolve. (You can read more about that here: Tryptophan for the worry-in-your-head and ruminating type of anxiety)

I would love your feedback. Do you use gelatin or collagen regularly i.e. daily or weekly? And why do you use it? How do you use it and what benefits do you notice?

Have you noticed an increase in anxiety or worsening of mood or any of the other low serotonin symptoms? Do you take tryptophan or 5-HTP to offset the fact that gelatin or collagen doesn’t contain any tryptophan and does that help?

Have you done the off/on test with collagen/gelatin and tryptophan or 5-HTP – and what was the outcome?

Have you found collagen or gelatin helped to lower your high glucose levels?

Feel free to post your questions here too.

Since starting GABA my child sleeps for the first time in years and really notices a difference in his carb cravings

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gaba made differences in son

Today I’m sharing a success story where GABA, used as a supplement, helps a teenage boy sleep for the first time in years and also helps reduce his carbohydrate cravings. This boy’s mom, Calle, shared their wonderful story on this blog post – GABA for ending sugar cravings (and anxiety and insomnia):

Got some GABA for our ASD [autism spectrum disorder] child. He has not slept well for years. We had tried all kinds of stuff. I am a healthcare pro and have studied and read and tried so much. But this stuff is a true miracle. For the first time in years my child sleeps. He sang and was all smiles from ear to ear for the first three days.

And then she posted this a few days later (and how shocked they both were!):

Our son has also really noticed a difference in his carb cravings since doing GABA. He went to grandma’s house and was not tempted by 6 pies, tons of cookies, sweet rolls etc. We were both shocked. This is a kid who would mow through tons of cookies, rolls and pastries.

I love getting feedback like this and am so happy for them!

There is no study on the use of GABA as a supplement for helping sleep problems in those individuals with ASD/autism spectrum disorder. Here are two papers for further reading until such a study is done:

Studies indicate that between 50% and 83% of individuals with ASD have sleep problems or disorders.

This review approaches sleep in autism from several perspectives: Sleep-wake mechanisms and problems, and brain areas and molecules controlling sleep (e.g., GABA and melatonin) and wake maintenance (e.g., serotonin, acetylcholine and glutamate).

GABA concentration in the sensorimotor cortex of adults with ASD was lower than in neurotypical adults (decrease by 17%). Interestingly, GABA concentrations were positively correlated with self-reported tactile hypersensitivity in adults with ASD.

If you’re new to the amino acids here is a quick summary about GABA: low levels of GABA, a calming neurotransmitter typically leads to anxiety, fears and panic attacks, with the anxiety showing up as a physical kind of anxiety with muscle tension or muscle spasms. Low GABA levels can also affect sleep especially when there is muscle tension. Folks often describe that they lie awake feeling stiff and tense. And as with all neurotransmitter deficiencies there is also the carb/sugar and/or alcohol (in adults) cravings as a way to self-medicate.

In this instance low GABA only resulted in sleep issues and carb cravings for Calle’s son. No mention was made about anxiety but it’s possible he was not able to articulate that he felt anxious. I don’t know if Calle’s son experienced tactile hypersensitivity (common in ASD) but if he did this may have factored in with his sleep issues.

In her comments Calle also shared this and it’s so true: “Healing is like learning to dance, you stumble, step on toes and learn to trust your body.”

I appreciate Calle for sharing her son’s story and I’m sharing it here so you can see yet another way GABA can address symptoms and improve someone’s life (and improve things for the rest of the family too). If her son can now sleep after years of sleep challenges then anything is possible.

Keep in mind that this blog goes beyond a teenage boy with an ASD diagnosis who has sleep issues and craves carbs. It could be applicable to anyone – male or female, adult or child – who has low GABA levels that contribute to his/her sleep issues and carb cravings (and often physical anxiety symptoms too).

How have you used GABA as part of your own healing journey or for your child or other family member and have you found the journey to be like a dance?

If you’re a practitioner, do share how you have helped your clients/patients by using GABA.

Feel free to post your questions here too.

This Is Your Brain on Food by Uma Naidoo, MD (video interview and review)

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brain on food

Dr. Uma Naidoo has a wonderful new book called This Is Your Brain on Food: An Indispensable Guide to the Surprising Foods that Fight Depression, Anxiety, PTSD, OCD, ADHD, and More (my Amazon link)

Her big bold message is this “Until we solve nutritional problems, no amount of medication and psychotherapy is going to be able to stem the tide of mental issues in our society.”  This is something I wholeheartedly agree with!

I had the wonderful opportunity to interview Dr. Naidoo and we talked about the benefits of fermented foods and social anxiety, vitamin D and anxiety, dietary sources of polyphenols for ADHD and much more:

51 women with type 2 diabetes and vitamin D deficiency were randomly allocated to receive one oral pearl of 50,000 IU vitamin D3 (26 women) or a placebo (25 women) fortnightly for 16 weeks

Anxiety score changes were significantly lower in vitamin D group than the controls

Dietary polyphenols… have antioxidant capacities as well as immunoregulatory effects and, therefore, appear appropriate in ADHD therapy.

  • Dr. Naidoo recommends these sources of polyphenols: berries and other fruit, vegetables, extra virgin olive oil.
  • I’m fascinated by the fact that polyphenols “act as a low-dose toxin that trains the body to mount an immune response in a process called hormesis” (there are many geeky gems like this in the book)
  • Dr. Naidoo shares the story of her 36 year old patient with severe anxiety. He was a binge eater and also had a history of alcohol abuse. Vitamin B1 (250mg) was every effective for him…“In animal studies, thiamine appears to reduce stress-like responses because it protects the hippocampus”
  • We talk about chamomile tea and how it helps with sleep. There are some cautions if you’re on a blood thinner prescription or going to have surgery. Pregnant women should also avoid it.
  • Dr. Naidoo shares a delicious Golden Milk recipe with tips on how to use turmeric (one her favorite spices and inspired by her grandmother’s cooking) with black pepper. You’ll find this in the recipes section.
  • Dr Naidoo also shares one of her favorite comfort foods – a yummy lentil soup recipe called dal in south Indian cuisines. It’s a great source of fiber, plant-based protein and is very affordable. And really healthy when cooked with vegetables and spices like mustard seeds, ginger, garlic and turmeric. She shares a tip to improve the flavors – making tadka (listen to the interview below, enjoy and be inspired!)

 

It’s a wonderful book that I highly recommend if:

  • you are new to nutritional psychiatry and the power of food
  • you are a seasoned foodie and want to geek out on mechanisms and the science
  • you want to learn about foods and nutrients (all science-based) specifically for depression, anxiety, PTSD, OCD, ADHD and insomnia
  • you are a practitioner and want to learn and share a wonderful book with your patients or clients

I read it cover to cover and picked up so many gems. I also loved reading about her memories of cooking with her Pinetown granny (Pinetown is just outside Durban where we both happened to grow up)!

We do have a few professional differences of opinion that I feel I should mention:

  • I am not in favor of canola oil and I’d switch out the recipes that call for canola oil with olive oil
  • I have a difficult time extrapolating high-fat diets in rat studies to concerns about saturated fat consumption in humans (given the nature of the rat chow in many of these studies)
  • I’m more concerned with portion-size of carbs than I am with portion-size of healthy fats (and typically recommend full-fat coconut milk, and chicken and turkey with skin-on)
  • I find grass-red meat to be beneficial for my clients with anxiety and mood issues
  • Many of my anxious clients cannot tolerate any caffeine and I consider 14 alcoholic drinks a week for men and 7 alcoholic drinks a week for women to be excessive
  • I prefer stove-top and oven cooking to using a microwave.

This is the official book blurb:

Did you know that blueberries can help you cope with the aftereffects of trauma? That salami can cause depression, or that boosting Vitamin D intake can help treat anxiety?

When it comes to diet, most people’s concerns involve weight loss, fitness, cardiac health, and longevity. But what we eat affects more than our bodies; it also affects our brains. And recent studies have shown that diet can have a profound impact on mental health conditions ranging from ADHD to depression, anxiety, sleep disorders, OCD, dementia and beyond.

A triple threat in the food space, Dr. Uma Naidoo is a board-certified psychiatrist, nutrition specialist, and professionally trained chef. In This Is Your Brain on Food, she draws on cutting-edge research to explain the many ways in which food contributes to our mental health, and shows how a sound diet can help treat and prevent a wide range of psychological and cognitive health issues.

Packed with fascinating science, actionable nutritional recommendations, and delicious, brain-healthy recipes, This Is Your Brain on Food is the go-to guide to optimizing your mental health with food.

Uma Naidoo, MD is board-certified psychiatrist (Harvard Medical School), professional chef (Cambridge School of Culinary Arts), and nutrition specialist (Cornell University). She is currently the Director of Nutritional and Lifestyle Psychiatry at Massachusetts General Hospital (MGH), where she consults on nutritional interventions for the psychiatrically and medically ill; Director of Nutritional Psychiatry at the Massachusetts General Hospital Academy; and has a private practice in Newton, MA. She also teaches at The Cambridge School of Culinary Arts.

Dr. Naidoo speaks frequently at conferences at Harvard, for Goop audiences, the New York City Jewish Community Center (JCC), and Ivy Boston. She blogs for Harvard Health and Psychology Today and completed a unique video cooking series for the MGH Academy which teaches Nutritional Psychiatry using culinary techniques in the kitchen.

You can get your copy of This Is Your Brain on Food here (my Amazon link) and find additional information about Dr. Naidoo here and the book here.

Let us know what you think in the comments below and be sure to leave Dr. Naidoo a review once you read your copy!

Feel free to post your questions here too.

5-HTP can raise salivary cortisol: does this cause a “wired-tired” feeling?

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5-htp salivary

Are you aware that 5-HTP – an amino acid supplement that supports serotonin levels – can raise cortisol levels and leave you feeling “wired-tired”? You may be able to relate to this if you’ve ever used 5-HTP to help with anxiety and insomnia and ended up feeling more anxious and more wide-awake despite your exhaustion and need for sleep. You feel “wired-tired” and it’s not pleasant at all.

Both 5-HTP and tryptophan, used as supplements, help to boost serotonin levels so you can feel happy, calm, sleep well and not crave carbs in the afternoon/evening. They also help with panic attacks and phobias, lack of confidence, depression, negativity, imposter syndrome, PMS, irritability, anger issues, pain/fibromyalgia, TMJ and anger. I typically have my clients with low serotonin symptoms start with a trial of tryptophan because I see such excellent results with this amino acid. That being said, some people simply do better on one versus the other and you may do better with 5-HTP.

However there is one big caveat with 5-HTP. I don’t recommend 5-HTP when a client has elevated cortisol levels because we know that it can raise cortisol levels in certain individuals. This can leave you feeling agitated, cranky, as well as wired and yet tired at the same time.

In this 2002 study, L-5-hydroxytryptophan induced increase in salivary cortisol in panic disorder patients and healthy volunteers

Salivary cortisol levels were measured in 24 panic disorder patients and 24 healthy volunteers, following ingestion of 200 mg L-5-hydroxytryptophan or placebo.

The experiment was carried out in the afternoon, “when basal cortisol secretion is more stable.” The first saliva sample was obtained at 1pm and the subjects ingested the 200mg 5-HTP at 2pm. Additional saliva samples were obtained at 2:30pm, 3:00pm and 3:30pm.

They report the following:

A significant rise in cortisol was observed in both patients and controls following ingestion of L-5-hydroxytryptophan. No such effects were seen in the placebo condition.

Here are a few additional comments and my thoughts:

  • This study was done to find evidence for “serotonin receptor hypersensitivity in panic disorder” and not specifically to test for the effects of 5-HTP on cortisol levels but it serves this purpose rather nicely (and it’s one of many similar studies, some of which measure plasma cortisol levels)
  • Keep in mind 200mg of 5-HTP is a large starting dose. It’s typical to start with 50mg so may be a factor to consider
  • In this study they did not assess cortisol levels beyond the 1.5 hours from ingestion of the 5-HTP. It would have been useful to see when levels started to go down
  • We would want to consider the ramifications of using 5-HTP for weeks (whether it’s 50 or 200mg). What impact would that have on cortisol and the adrenals? (I am not aware of a study like this having been done)
  • I’m also not aware of a study being done with 50mg but if you feel worse and feel “wired-tired” with 5-HTP and switch to tryptophan (the equivalent starting dose is 500mg) and your anxiety and other low serotonin symptoms resolve then you have found your solution
  • You may be wondering: “could I use 5-HTP to raise my low cortisol levels”? Theoretically yes and possibly very short-term. But I would question the timing since 5-HTP and tryptophan are best dosed mid-afternoon and later. This is when we would expect our cortisol levels to be on the downward slope as we end our day. I’d also want to nourish the adrenals with B vitamins and herbal adaptogen and remove the trigger/s that are leading to low cortisol.

If you suspect low serotonin symptoms and are new to using the amino acids and do not have my book I highly recommend getting it and reading it before jumping in to taking supplements: The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings.

There is a complete chapter on the amino acids and one for pyroluria, plus information on real whole food, sugar and blood sugar, gluten, digestion and much more.  If you’re not a reader there is now also an audible version.

Here is the Amino Acids Mood Questionnaire from The Antianxiety Food Solution and additional information on Anxiety and targeted individual amino acid supplements: a summary

Please also read and follow these Amino Acid Precautions.

This lists The Antianxiety Food Solution Amino Acid and Pyroluria Supplements that I use with my individual clients and those in my group programs.

Have you used 5-HTP with success? Or have you used it and felt “wired-tired”? Have you correlated the success or failure of your 5-HTP use with your salivary cortisol levels?

If you switched from 5-HTP to tryptophan did you have success with that?

If you’re a practitioner is this something you see with your clients/patients and take into consideration?

Feel free to post your questions here too.

Tryptophan ends TMJ pain, headaches and worry, and improves mood and sleep: a success story

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tryptophan success story

Today I’m sharing a success story on how the amino acid tryptophan, taken as a supplement, ends  TMJ (temporomandibular joint) pain and headaches in a woman in my community. She had the added benefits of an improved mood and less worrying and her sleep improved too.

There is evidence to support the low serotonin connection to TMJ and pain like fibromyalgia and I share that research below.

Before I share the success story, in case you’re new to neurotransmitter imbalances, the other symptoms we see with low serotonin are the worrying-type of anxiety, panic attacks and phobias, lack of confidence, depression, negativity, imposter syndrome, PMS, irritability, anger issues, insomnia and afternoon/evening cravings. Tryptophan can be used to boost serotonin levels and improve these symptoms as you’ll see below.

Right after speaking on the recent Trauma and Mind-Body Super Conference, Renee shared her wonderful success story on Facebook:

Out of all the interviews I felt yours gave the most actionable steps. I was taking amitriptyline for TMJ and didn’t like the side effects, however what other options did I have? Not many according to my GP [general practitioner]. Luckily I found your suggestion of tryptophan. And I can’t explain how much of a change it made! I weaned off the medicine and took tryptophan instead and not only did it help the TMJ but also helped me feel more even emotionally.

I am being referred for trauma therapy and I am optimistic that I will be discomfort free soon.

So huge thanks for sharing your knowledge. It helped me at a time when I was really starting to think there were no ‘natural’ options and conventional meds were all I could take.

I checked in with her, thanking her and acknowledging her wonderful feedback. I also asked how much tryptophan made this difference and how quickly she saw an improvement. And what side-effects she was seeing with the medication. She shared this:

I am a week into taking tryptophan, and I’m taking 500mg. I saw improvements with the TMJ within an hour of taking it. My jaw felt loose and I had no headaches, I also felt more ‘even’ mood wise. Like an underlying worry had gone. [worry is a classic symptom of low serotonin – more on that here]

I also had some stress yesterday that usually would have made me crumble, but instead I was able to stand up for myself and see subjectively the extent of the issue and resolve it. I am amazed!

My original medication (amitriptyline) had given me extreme dry mouth, which I found hard to manage, the headaches were also not relieved as much as I had hoped, plus I was having sessions of palpitations.

I haven’t had any palpitations from the day I started tryptophan whereas the dry mouth took some time to subside.

These really are wonderful results and typical that we’d see results this quickly with tryptophan if the root cause of the TMJ and headaches is low serotonin. It can sometimes take a few weeks to find the ideal dose but Renee found it with the initial trial amount of 500mg.

The tryptophan also improved her sleep (and the palpitations and dry mouth side-effects from the medication stopped):

I was struggling to get to sleep and stay asleep, suffering bouts of insomnia, prior to any medication. I still am sleeping well taking tryptophan which I am pleased about.

She did however share that the timing of the tryptophan was making her too sleepy too early in the evening and she was planning to shift the timing:

I am finding tryptophan is making me feel drowsy in the evening, so I am trying different times during the day to take it. Hopefully I can push back the tiredness to perhaps 8/9 at night to coincide with bedtime.

My advice to her was that I have my clients use tryptophan MA (mid-afternoon) and evening and if MA makes them too sleepy they just do an evening dose. That can be enough for TMJ the next day. Sometimes more than 1 x 500mg in the evening is needed for easing TMJ and headache pain that night and the next day too.

I did check with her about weaning off the medication as cold-turkey quitting of psychiatric medications are dangerous and not advised. She shared this:

I weaned off over 1 week, but I was only in it for 8 weeks in total before I found tryptophan.

A slow taper under the guidance of the prescribing doctor is always recommended (more on this for amitriptyline/Elavil withdrawal here).

Here is some research supporting this serotonin/TMJ connection:

…both temporomandibular disorders myalgia (TMDM) and fibromyalgia (FM) have been linked to central and peripheral changes in serotonin availability.” (tryptophan is not used in this study which also makes the serotonin/anxiety connection)

Over the 4 weeks of the study, there was a greater reduction in reported clinical pain and a greater increase in pain tolerance threshold in the tryptophan group than in the placebo group. The tryptophan group was given “three grams of tryptophan in conjunction with a high carbohydrate, low fat, low protein diet.”

If you suspect low serotonin symptoms and are new to using the amino acids and do not have my book I highly recommend getting it and reading it before jumping in to taking supplements: The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings.

There is a complete chapter on the amino acids and one for pyroluria, plus information on real whole food, sugar and blood sugar, gluten, digestion and much more.  If you’re not a reader there is now also an audible version.

Here is the Amino Acids Mood Questionnaire from The Antianxiety Food Solution and additional information on Anxiety and targeted individual amino acid supplements: a summary

Please also read and follow these Amino Acid Precautions.

This lists The Antianxiety Food Solution Amino Acid and Pyroluria Supplements that I use with my individual clients and those in my group programs.

We appreciate Renee sharing her success story. Please share your TMJ/headache tryptophan success story if you have one. And feel free to post your questions here too.

Dr. Datis Kharrazian’s GABA Challenge for a leaky blood brain barrier is a theory and we still have much to learn

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gaba challenge theory

I highly respect Dr. Datis Kharrazian and his work and had the pleasure of interviewing him last November on the Anxiety Summit 5: Gut-Brain Axis. During our preparations I asked if we could talk about his GABA challenge for a leaky blood brain barrier and he graciously agreed.

I wanted to address this topic in our interview because two of the most common questions I get asked are these:

  • “How can GABA work if it can’t cross the blood brain barrier?” and
  • “If GABA works does this mean I have a leaky blood brain barrier?”

We had such a great conversation on the topic I’ve decided to pull this part of the transcript into a blog so I can share it here with you and use the blog link to share it more widely as I’m asked these questions on social media and elsewhere.

You will learn how Dr. Kharrazian came up with the GABA Challenge, what his thoughts are today, his reservations with GABA and my excellent results with low doses of sublingual GABA. I also share some links to success stories, some of the research and how to figure out if GABA is for you.

Here it is, word for word.

Trudy: So while we’re talking about the leaky blood brain barrier, I want to just talk briefly about GABA and the GABA challenge that you have proposed as a tool for testing for a leaky blood brain barrier. And as you know, I use GABA extensively with clients with the low GABA physical type of anxiety.

I’ve always been a huge fan of you and your work but we do have a professional difference of opinion in this area. And I’ve never actually been a proponent of using the GABA challenge, and I’ve been pretty vocal about it. So I’m really glad that we had a discussion about this in the Facebook group of your neuroinflammation training, and you shared some insights because I was asking some questions about this.

I’d love you to just share some of what we talked about in that discussion. Because if we don’t talk about it, my community is going to say, “Hey, why didn’t you talk to Dr. Kharrazian about this?”

Dr. Kharrazian: Sure, no problem. I don’t think we have this big a disagreement. I think we just have different ways of looking at what’s out there and what we are observing as people working with people, patients who have anxiety.

So ultimately, we have a bunch of theory right now and a bunch of potential models, but we don’t have any clear studies to show what’s really happening. So, one of the things that I proposed in my book before… you understand, I was working with brain patients for over 20 years now….before we had S100 B readily available for many years, it was only in research; you couldn’t get it from conventional labs, even though research was showing it. And the blood brain permeability test was not available either. These have really become more available the past five years and prior to that, we didn’t really have a great test to evaluate if the blood brain barrier was breached.

In an effort to work with what’s out there, what we could do, one of the things that I was doing was doing a test that we called the GABA challenge test. It was really based on the lactulose mannitol test. So the lactulose mannitol test is a well-established test in gastroenterology where they measure leaky gut. So, in that test what the person does is they consume a monosaccharide and a disaccharide, lactulose and mannitol. Lactulose is a disaccharide, it’s very large, and mannitol is very small. And if mannitol doesn’t get absorbed, then there’s a malabsorption issue. And if lactose, which is very large; that should not get through the tight junctions of the gut, gets absorbed in a post urine test, after they drink it, then it shows they have leaky gut. So the whole premise of when you find particle sizes too large to cross, can be a clue to an indication of permeability.

So the GABA challenge that I write about in my book, Why Isn’t My Brain Working? (my Amazon link) was really a way for us to have patients consume GABA. If you look at the molecular weight of GABA, the Dalton size, it’s several hundred Daltons. Several hundred Daltons cannot cross the blood brain barrier. So the concept was, well if someone is taking GABA and they have an effect, then there’s a potential for it to cross the blood brain barrier. And it was kind of following the theory of the lactulose mannitol test. So there’s patients out there who take GABA and nothing happens and some patients take it and go, “It was amazing. Best thing ever. It finally helped me sleep,” or, “Helped reduce anxiety for me.” So, one of the theories was that maybe for some of these people, their blood brain barrier is breached.

Now I know we talked and there is actually the possibility of other pathways that can impact GABA, maybe directly to the gut itself, through the vagus, so I don’t discount those possibilities because we still don’t know. I mean, ultimately, there’d have to be a study designed where they look at it. And it would have to be an animal study, there’s no way you can get an IRB for human studies to check if it’s crossing the brain. It’s some really advanced isotope tracing techniques and I just don’t think the level of dyes they would have to consume to look at the gut and the brain is peripheral and separate… it wouldn’t be possible. So the real answer is, we don’t know.

For me, I still am always suspicious if someone takes GABA and they have a reaction. I always want to go and check the blood brain barrier. And it’s not 100%, I mean, I can tell you without question, there’s people who take GABA, you do a blood brain barrier test, they feel benefit from it, but their blood brain barrier doesn’t have any markers to show permeability.

So it’s not hard for me to consider the possibility that there’s some exogenous pathways too. But at the same time, it’s also really hard to look at the molecular weight of GABA and look at what can cross a healthy blood brain barrier. This Dalton size, we’re talking nanoparticles to a huge, huge particle. So I don’t know but I think we’ll just have to see what happens. And ultimately, if you feel better with GABA, that’s great. If it’s not harmful to you, and if you feel like taking it, that’s great.

I like to also use things like Valerian root, passion flower, and hops because those compounds cross the blood brain barrier. They cross the blood brain barrier and they bind to GABA receptors.

So, the other thing too with actually using GABA you always have the potential for your neurotransmitter receptor sites to down regulate. And this is seen all the time too, patients take GABA and they feel great and then they have to increase their dose and they don’t get the effect as they first did. And they increase the dose and finally, they just don’t get much of an effect from it. And that’s potentially due to receptor site down regulation, which is not as common if you take agonists like Valerian root or passion flower, or hops. These things bind to GABA receptors. So I did a review in my book, where I went over all the literature of the different GABA compounds, which have been published in the literature.

But I’m not going to deny the possibility that there is a potential exogenous source but I also can’t let go the possibility that the blood brain barrier is permeable. So I’m still waiting.

Trudy: Yes, I think it’s great because the fact that you write about that and you taught about that, and you teach about it. It got me looking into the research further and it got me more curious; and it’s good, it’s good to have a healthy discussion and a healthy debate, and be open to possibilities. I’m very open to having my mind changed if something comes up.

I just see GABA works so well with my clients and we use very, very small amounts. I know with your GABA challenge, it’s… what is the amount, its 1,500 milligrams, I think or 1,500 to 2,000? So I’ll start my clients on 125 milligrams of GABA sublingually and get results. I have not noticed the effect that they need more and more, and more. So that’s interesting that you say that. But yeah, it’s good, I’m glad that we’ve had this discussion.

And the other thing that you did say in the online discussion, you said, if someone has a response to taking oral GABA, in other words, taking a GABA supplement does help them, you would want to test for the blood brain barrier permeability, just to see what’s going on. And I like that you say we can track. I’ve actually been in discussions with Cyrex and said, “Hey, why don’t we monitor people who are doing the Cyrex test and have a response to GABA, either therapeutically for the anxiety or with your challenge?” We may start to see some patterns, which I think would be very interesting.

Dr. Kharrazian: Yes, the best we can do with the data in that scenario is just the correlation statistical analysis. But it still wouldn’t answer it.

Trudy: No, I know. But maybe that will trigger someone to want to do a study. So, the good news is we’re seeing more and more research on GABA in the literature. So, it’s exciting. Well, thank you for discussing that with me.

You can read more from our very enlightening interview here: Fix the Brain to Fix the Gut. Dr Kharrazian covers the impact of brain injury and impaired vagal activity (as well as motility and breakdown of the blood brain barrier), how to activate your neurons, using polyphenols for neuroinflammation and butyrate for leaky gut/brain.

These blogs have additional information on GABA and some of the many possible mechanisms:

Here are some blogs with feedback from folks who have benefited from using sublingual GABA for dental anxiety, ADHD/focus issues and Lyme anxiety:

The best way for you to figure out if you will benefit from GABA is to use the trial method. Do the low GABA questionnaire and do a trial of GABA (used sublingually), starting low and increasing until you find the right amount to ease anxiety and improve sleep. You can find the GABA products I recommend on my supplements blog.

Please do share if you’ve benefited from using GABA or if you use it with success with your clients or patients.