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If you have experienced trauma, particularly childhood trauma or complex trauma, you probably aren’t surprised to hear that trauma doesn’t only affect the mind. It can affect the functioning of your entire body, including your digestive system. In fact, research suggests that about one in five people living with a chronic GI condition also experience symptoms of post‑traumatic stress.1 If you’ve ever felt like your gut is “overreacting” or “out to get you,” you’re not alone—and you’re not imagining it. Your body may be responding to past experiences in ways that make perfect biological sense.2 Let’s break down what we know so far.
How Trauma Affects Digestion 1. The Gut and Brain Are Always Talking Your gut and brain communicate constantly through nerves, hormones, and the gut microbiome. When trauma or chronic stress enters the picture, this communication can become disrupted. For some people, this shows up as:
Trauma doesn’t cause these conditions outright, but it can make the gut more sensitive, reactive, or inflamed. 2. Stress Can Change the Gut Microbiome Early life stress, including emotional neglect or difficult childhood experiences, can leave long‑lasting “fingerprints” on the gut microbiome. This can influence:
Even in adulthood, chronic stress can shift the microbiome toward more inflammatory patterns. Some studies show that adults with a history of childhood abuse have higher levels of inflammation‑related microbes.5 3. Trauma Can Make the Gut More Sensitive Many people with trauma histories experience visceral hypersensitivity, meaning the gut feels pain from sensations that wouldn’t bother most people.6 Normal things like gas, pressure changes, or digestive movement can feel sharp, intense, or alarming. This isn’t “in your head.” Trauma can increase stress hormones like CRH and reduce parasympathetic nervous system activity (that’s the “rest‑and‑digest,” calm state rather than the sympathetic “fight-flight-freeze” nervous system). Together, these hormone and nervous system imbalances can make the gut more reactive.7,8,9 4. Trauma Can Affect Eating Patterns—and Vice Versa There’s a strong connection between digestive disorders and eating disorders. In one study, 90% of people with an eating disorder had at least one disorder of gut‑brain interaction, also known as a DGBI.10 Sometimes GI symptoms (like nausea, bloating, or pain) lead to food avoidance. Other times, disordered eating behaviors create or worsen GI symptoms. Trauma often sits underneath both.11 This can make recovering from disordered eating feel confusing and complicated. But understanding the gut‑brain connection can bring clarity and self-compassion. Why This Matters for Healing If you’ve lived through trauma and now struggle with chronic GI symptoms, you may feel frustrated, discouraged, or disconnected from your body. Many clients tell me they don't trust their bodies, and their gut symptoms feel unpredictable. They feel their bodies are failing them. But here’s the truth: Your body is not failing you—it’s responding to a flawed environment the best way it knows how. Your symptoms are not failings. They’re communication. A Trauma‑Informed Approach to Gut Healing Healing the gut in the context of trauma requires gentleness, curiosity, and collaboration—not rigid food rules or harsh elimination diets. A supportive approach may include:
Research shows that people with GI conditions often experience more anxiety, depression, and food‑related stress when starting nutrition therapy.12 A trauma‑informed dietitian can help reduce that burden rather than adding to it. You Deserve Care That Sees the Whole You Your gut symptoms are real. Your history matters. And your healing doesn’t have to be overwhelming. When we understand the gut‑brain axis through a trauma‑informed lens, we can finally see your symptoms not as random or “broken,” but as meaningful—and treatable. If you’d like support navigating your gut symptoms with compassion and science, I’m here to help. You can send me a message here or schedule a free discovery call here. If you’re interested in learning more but not ready for 1:1 nutrition therapy yet, I’ve also got a comprehensive IBS course where I walk you through diagnosis, treatment, and maintenance, using the same trauma-informed approach I use in session with my clients. We do cover intensive dietary interventions like the low-FODMAP diet, but alongside other gentler and more trauma-appropriate approaches like FODMAP-gentle, gut-directed hypnotherapy, lifestyle-supportive interventions, and more. Lastly, a note to other healthcare professionals: I’ve got a book on this! Chapters 2-3 of my book, Trauma-Informed Care: An Integrative Nutrition Approach to Empowered Healing, go much, much deeper on physiological impacts of trauma, including GI-specific impacts, than we can go here (plus 14 CEUs for RDs, DTRs, and CDCESs). References:
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Anyone who deals with irritable bowel syndrome (IBS) understands the stress that mealtimes can bring, especially when you’re not in full control of the menu. Whether at a friend’s house or a restaurant, what was intended to be a fun night out can quickly turn stressful with the sudden onset of IBS symptoms. Perhaps you’ve become so discouraged by an unpleasant memory that you avoid eating out, or you feel like you can’t fully participate in the experience and end up abstaining from eating while with others. The challenges of living life with unpredictable symptoms are very real, but thankfully, there is hope, too! For those with complex and severe symptoms, it’s important to first seek a full evaluation from a trusted physician or gastroenterologist (GI doctor). Even for those with a clear IBS diagnosis, symptoms can often be difficult to handle on your own, and seeking help from a registered dietitian can be an important piece of your healing journey. In the meantime, here are some practical tips for eating out so you can shift away from the anxiety of unpredictable symptoms and focus on enjoying a shared meal with others.
Need some examples of low-FODMAP alternatives at your favorite restaurants? Here are a few ideas to get you started.
Whether going out to a restaurant with family or friends, or meeting at a friend’s house, IBS does not have to keep you from enjoying social meals. Making strategic choices and eating mindfully can help you can feel confident and comfortable, even when you're not fully in control. Want more tools to help you manage IBS without overcomplicating your life? Our Living Well with IBS Course is designed just for you. You can access the IBS Mini-Course for free, and check out the full online course Living Well with IBS for a deep dive. Need more personalized guidance? Send Erica a message or schedule a free discovery call. Affiliate link note: As an Amazon affiliate, I earn from qualifying purchases. Renee Chmiel |
| The field of nutritional psychiatry is exploding right now as we learn more and more about the impact of our dietary choices on the brain and the mind. When I burst excitedly into this field several years ago, I was expecting to find loads of resources to help me as a clinician. Unfortunately, I found almost nothing. Fortunately, I absolutely love research. This book is truly a labor of love. It's my attempt to create something to help others who are interested in entering this important field to feel less "at sea" than I did when I first started out. I wanted to build something that offered a balanced view of the field, recognizing the many things that we don't yet know, the areas where data are conflicting, and the vital importance of interdisciplinary care in this field. I wanted this book to show you how important and powerful good nutrition care can be in improving our clients' mental health, but also to help you understand the counseling approaches that are vital in working with this population so that we can truly do good and not re-traumatize our clients, fearmonger, foster disordered eating patterns, or simply discourage. I'm so excited to share it with all of you. |
That’s partly because hunger is not binary. Meaning, it’s not just either-or: either hungry, or full. Hunger and fullness exist on a continuum. Often, figuring out where exactly we are on that continuum takes more attention than we tend to pay to anything going on internally.
In the process of learning to tell when to start and when to stop eating, it can be helpful to put numbers on that continuum.
While the sensations of hunger and fullness aren’t the same for every person, here’s an example of what that might look like on a one-to-ten scale:
1 – Starving! I have severe hunger pangs and feel shaky and weak. I am obsessing over food.
2 – Ravenous. I am really hungry, but it’s not yet intolerable. I am thinking about food constantly.
3 – Hungry. I have slight hunger pains, but it’s not uncomfortable. I know what I could eat and feel satisfied.
4 – Mild hunger. My stomach is growling, I know I will want to eat soon.
5 – Neutral. Not hungry, not full.
6 – Mild fullness. I am filling up, but I could eat a bit more to feel totally satisfied. I feel energized by what I have eaten.
7 – Full. I am totally satisfied and feel no hunger. My energy level has been topped off and I feel like I won’t be hungry for hours.
8 – Slightly overfull. I should have stopped eating a few bites ago. Stomach feels a bit swollen.
9 – Overfull. I am overfull and bloated, uncomfortable and sleepy.
10 – Stuffed. I am full to the point of feeling stuffed. Extremely uncomfortable. I have eaten much more than what was good for my body. I have no energy. I feel like I could be physically ill to relieve the discomfort.
(source: whatsforeats.com.au)
On the scale above, you would probably want to keep yourself between a 3 and a 7 most of the time. While there are always going to be exceptions in either direction—it’s a totally normal part of normal eating to sometimes be a bit too hungry and sometimes be a bit too full—our body and mind tend to work best within that comfortable zone between the extremes.
Getting below a 2 or 3 on the hunger scale can make it difficult to focus on other tasks and can lead to overeating when you do eat. It may make it difficult for some people to get enough energy and nutrients over the course of a day. It may also lead to slower thinking and decision-making and cause you to not move your body as much. The bottom line: there is a reason why our bodies tell us that we are hungry, and it’s important to our health that we listen.
Routinely eating past a 7 or 8 is uncomfortable and, for some people, can lead to stomach and digestive problems (such as acid reflux or diarrhea). The feeling of fullness often does increase slightly over a few minutes after you’ve finished eating, which is why slowing down the process of eating can be helpful if you tend to be a quick eater. The bottom line: if you’re routinely eating past fullness, stop and ask yourself why. Is there another reason besides hunger that you’re eating? (This is not necessarily a bad thing, but helpful to be aware of.) Are you eating too fast? Do you set your fork down, chew thoroughly and taste your food, take sips of water, and take the time to smile? Are you always in a rush, eating on the go, or anxious about the food you’re eating or the environment in which you’re eating?
Try stopping yourself routinely throughout a meal to think, how hungry am I? If I stopped now, would I have the energy I needed to be active and stay focused for the next few hours? If I took a few more bites, would I feel better, or worse?
As a mindfulness practice, you may want to try to figure out your just-noticeable-difference—the number of bites it takes to make a discernible difference in your level of hunger/fullness.
Above all, don’t let mindful eating become stressful or make your mealtime less enjoyable. Use it to help you get the most out of your meals and snacks, enjoying them to the fullest and ensuring that they give you energy to live your life and feel well.
Note: Mindful eating can be very helpful for some, but not for all. There are several groups of people for whom I tend to avoid recommending mindful eating, at least early on in our work together.
For example, if you are dealing with disordered eating that leads you to feel very anxious about food, you may need to start with a more structured approach towards eating rather than with mindfulness in the initial stages of treatment. Additionally, some patients with functional bowel disorders may deal with an excessive focus on internal sensations (this is known as visceral hypersensitivity) and trying to increase focus on the sensations of hunger and fullness may not be appropriate initially.
If you’re wondering whether practicing eating mindfully would be helpful for you, I encourage you to talk to a dietitian or counselor. If food is of particular concern, try starting out with practicing mindfulness in other areas of life first—mindful movement or mindful walking might be a lovely place to start.
She's amazing, she's beautiful, she's everything.
It's been a busy time, but having a daughter has helped spur me to think even more deeply about the world I want her to grow up in, and how I can be a part of building it.
This one's for the clinicians out there. Let me tell you something that I think is vital for all of us to know.
Whether or not you work in the mental health space, like I do, you work with clients with mental health concerns. You work with clients with trauma. We all do. Trauma is so unfortunately common that it's impossible not to. We all want to do right by our patients, and truly help them.
But have you ever been in an appointment with a medical professional where you felt uncomfortable? Where you felt they didn't understand your emotional and psychological needs? Have you ever experienced a physical exam where you felt you were not being touched appropriately? Ever felt like terms were used that were either too medical-ized or too personal?
It's unfortunate, but it is true: re-traumatization happens often in healthcare. We want to be part of the solution, but if we're not careful, we can be part of the problem. And there is precious little training available to dietitians and nutritionists who want to grow in this area.
I want to build a world where everyone in healthcare is knowledgeable about trauma and prepared to treat every patient in a trauma-informed way.
I've started teaching and doing trainings on trauma-informed care to try to fill this gap. I'm working on creating content and courses for providers to help you build your skills, so be on the lookout for more content, including:
- an upcoming CEU book through Skelly Skills (planned to be available in September 2023) that includes an entire research-backed chapter on trauma-informed care,
- a free webinar (follow me on Instagram or Facebook to get updates about this--no, I don't post much on social media but I try to make it worth both of our time when I do! :) ), and
- a more extensive training course for dietitians and nutritionists, planned in the future!
How can I help support you in learning about trauma-informed care? Let me know in the comments below or feel free to send me an email at [email protected].
What does magnesium do?
Magnesium is an essential mineral, and it is important for a bunch of different systems and functions in the body:
- Heart and cardiovascular health
- Metabolic health
- Muscle health
- Gastrointestinal health
- Hormonal and nervous system health
- Sleep hygiene
- Electrolyte balance
What causes magnesium deficiency?
Magnesium deficiency or insufficiency is unfortunately pretty common, considering all the important roles it plays in the body. Low magnesium levels can be caused by:
- Low intake of magnesium from the diet
- Inadequate absorption
- Magnesium-depleting medications (such as oral contraceptives, diuretics, PPIs, and H2 blockers)
- Stress (which might increase your body's need for magnesium)
- Insulin resistance (which can cause increased excretion of magnesium in the urine)
How is magnesium involved in anxiety and depression?
Magnesium is intricately involved in mental health. Low magnesium levels are linked to increased inflammation, circadian rhythm dysfunction (i.e., sleep issues), and poor tolerance to stress. We have discussed in previous posts the connection between inflammation and depression. Poor sleep is often a factor in worsening mental health, as well. Plus, magnesium is involved in balancing neurotransmitter function to promote CALM.
How can I get enough magnesium?
There are lots of dietary sources of magnesium, but they are mostly whole foods - which unfortunately are under-consumed by most Americans! Green leafy vegetables, whole grains, fish, nuts, and seeds are all great sources. When foods are processed and refined, magnesium content is sometimes lost, and Americans tend to eat a lot of processed and refined foods, which may partially explain why rates of deficiency and insufficiency are so high.
We get varied levels of magnesium from drinking water, depending on the source (mineral water and well water tend to be higher, but exact levels vary).
The Recommended Daily Allowance (RDA) for magnesium is 310-320 mg/day for women and 400-420 mg/day for men. (For reference, one of the highest-magnesium foods is pumpkin seeds, which contain 168 mg magnesium per ounce. Most other nuts, seeds, whole grains, and beans contain more like 30-60 mg per servings.)
If you're concerned you might not be getting enough, or you want to see whether additional magnesium might help some of your symptoms, magnesium supplements are also generally quite safe and effective. (But, it is always a good idea to check with your doctor or dietitian before you start a new supplement.)
Your healthcare provider can check the magnesium levels in your blood, but those levels might not be very useful. The amount of magnesium in your red blood cells (RBC Magnesium) might be a better test. But even then, the level of magnesium in your brain is what's most important for mental health. Low magnesium in the brain is associated with depression and neuroinflammation.
How might magnesium supplements help?
Increasing magnesium intake and/or supplementing with magnesium might help with:
- Managing depression, especially as an adjunctive treatment (alongside other treatments, including mental health medications when they're needed)
- Reducing symptoms of anxiety
- Improving sleep (including both sleep quality and duration)
- Preventing migraine headaches
- Improving insulin resistance and blood sugar control
- Managing constipation
What type of magnesium supplement is best?
There are lots of different options for magnesium supplementation. Depending on what symptoms you're looking to treat with magnesium, the optimal choice of supplement will vary.
If you are frequently constipated, the standard formulations of magnesium will probably help with this (such as magnesium sulfate, oxide, citrate, or chloride). It's a good idea to take the supplement at night to give it time to work - and that's the best time to take it for its sleep benefits, anyway.
On the other hand, magnesium glycinate and magnesium taurinate have both been used with good results in people with depression and anxiety, and seem to have fewer unwanted gastrointestinal side effects (for those who don't struggle with constipation at baseline). A newer supplement option, magnesium L-threonate, actually crosses the blood-brain barrier and boosts magnesium levels in the brain, which might make it an ideal choice to take advantage of the neurological and mental health benefits of magnesium.
Note: This post may contain affiliate links. I only recommend products I love!
Erica Golden, RDN, LD, IFNCP
Registered Dietitian Nutritionist with a passion for helping people improve their mental health and gut health using integrative and holistic therapies.
The vagus nerve is the longest cranial nerve in the body. It travels all the way from the brainstem to wrap around and run alongside organs throughout the abdomen, including the lungs, the esophagus, the heart, the liver, the stomach, and the large and small intestines (just to name a few).
It both carries signals from the brain down to the heart and the digestive organs (motor signals, telling those parts of the body what to do) and carries signals back up to the brain from those organs (sensory signals, telling the brain what’s going on in your midsection). It’s mostly in control of autonomic functions – the things your body does without you having to think about it, like pumping your heart, breathing, and digesting your food.
However, stress and anxiety affect the function of the vagus nerve pretty dramatically. When you’re in fight-or-flight mode, your heart rate and breathing speed up, and digestion slows way down. This makes good sense, since when your life is in imminent danger, you want to have adequate blood flow and plenty of oxygen to fuel your muscles, and you don’t really want to be thinking about finding a restroom.
But what about the chronic, constant day-to-day anxiety of our lives today? What about people with anxiety disorders?
In these cases, the vagus nerve’s function is thrown off balance. As a result, our heart and lungs will spend most of their time on high alert, working too hard, and our digestive system may become sluggish, leading to things like low stomach acid, gastroparesis (slow stomach emptying), acid reflux (also known as GERD), and poor digestion. Along with anxiety, this imbalance has been linked with depression, and with gut disorders such as IBS and IBD.
If you’ve struggled with chronic anxiety or an anxiety disorder, you might resonate with some of these symptoms. Perhaps your appetite tends to be poor when you are stressed, or if you try to eat you feel like the food sits in your stomach like a rock, or you develop heartburn after eating.
(On the other hand, you may have had the opposite experience, where anxiety causes your appetite to increase. This tends to be more of a learned self-soothing behavior, but doesn’t rule out having some of the same side effects of decreased vagus nerve functioning noted above.)
The important question, then, is: what can we do about this?
You may have been told by a well-meaning doctor, psychiatrist, or loved one in the past that you need to “reduce stress” or just “stop being so anxious.” These recommendations tend to be quite unhelpful and frustrating.
But there are some truly actionable ways to help close the loop of the stress cycle and harness the power of the mind-body connection to decrease anxiety.
Let’s start with the breath.
I mentioned that most of the functions of the vagus nerve are “autonomic” – meaning that they happen automatically without us having to think about them. This is true for digestion, certainly, and thankfully your heart keeps beating even if you’re not thinking about it. But breathing is different. It can and does happen automatically most of the time, but you also can control it, if you so choose.
Take a moment right now to notice the rate of your breathing. Is it fast or slow? Are you breathing through your mouth or through your nose? Are you holding your breath?
Now take a conscious, deep inhale through your nose, feeling your belly expand like a balloon as you breathe in. Count to four as you inhale; one, two, three, four. Hold it here for a count of seven; one, two, three, four, five, six, seven. And now breathe out through your mouth slowly, for a count of eight; one, two, three, four, five, six, seven, eight.
Repeat this at least four or five more times on your own, perhaps even with your eyes closed. You may notice that this is a much-needed moment of peace and stillness, and spend a few more minutes here on your own. By all means, please do.
When you have finished this short breathing practice, notice what’s going on inside your body. Has your heart rate slowed? Is your breathing a little calmer than it was when you first tuned into it?
Deep breathing, or diaphragmatic breathing, is one of the simplest ways to tap into and change the functioning of your vagus nerve. While I feel like this term is a bit too simplistic, some call it “resetting” your vagus nerve. Whatever you call it, doing breathing practices like this one regularly, you can actually strengthen its function, which is why this is called building “vagal tone.”
This can help improve heart rate variability, the ability of your cardiovascular system to respond to increases and decreases in stress levels appropriately – speeding up and slowing down to match the needs of the moment.
A lot of research is being done on VNS devices implanted to stimulate the vagus nerve for depression, PTSD, and epilepsy, among other things. However, there are some less-invasive methods you can try today.
Here are some of the other practices and tools that have been touted for improving vagal tone:
- Yoga (and other mind-body practices, like qi gong)
- Brief cold water immersion or cold showers
- Biofeedback
- Humming and singing
- Gargling
- Alternate nostril breathing (nadi shodhana pranayama)
- Acupuncture
- Massage
- Tapping
- Joyful movement
- Laughter
- A healthy diet (full of nutrient-dense foods, high in omega-3s, and with added probiotics such as from fermented foods)
So the next time you’re feeling anxious, give your vagus nerve some love! Over time, by regularly working on toning your vagus nerve, you might find it gradually get easier to move through the stressful fight-or-flight mode and get back to resting and digesting.
If you’re interested in learning more about the gut-brain connection and how to improve your mental health and gut health through the power of nutrition and lifestyle, contact us or schedule a virtual telehealth appointment with Erica, a mental health dietitian!
Note: This post may contain affiliate links. I only recommend products I love!
Erica Golden, RDN, LD, IFNCP
Mental Health, Eating Disorders, and Gut Health
Registered Dietitian Nutritionist
Our mental health not only affects how we think, but also our views on life and how we handle situations and emotions. In recent years with the COVID pandemic, there has been a sharp increase in anxiety and depression. This may be linked to the social isolation of the pandemic.
Depression is characterized by low mood. It affects sleep, appetite, emotions, and can even cause physical symptoms in the body, including fatigue and headaches. On the other hand, anxiety disorders are characterized by a persistent and intense worry and fear. It can lead to social withdrawal, and includes symptoms like sweating, having trouble concentrating, constant unrest or nervousness, and an increased heart rate.
Caffeine and Anxiety
As previously discussed, caffeine is a stimulant that increases energy and alertness. It blocks a neurotransmitter (a chemical messenger that relays messages to the brain and body through the nervous system) called GABA. GABA plays a role in calming nerve cell activity, meaning that it helps us relax.
By blocking GABA, caffeine can increase cognitive functioning, but can also increase anxiety. People with anxiety tend to have a lower tolerance to caffeine and are more sensitive to the effects. If you or someone you know has anxiety or gets anxious easily, decreasing caffeine intake can help. Similarly, with bipolar disorders, high caffeine intake can induce a manic episode. It’s recommended that those with bipolar disorder avoid consuming large amounts of caffeine.
Caffeine and Depression
For those with depressive disorders, studies have shown that caffeine tends to elevate mood. Since it acts as a stimulant, there’s a boost in brain functioning and energy levels. This can help with the fatigue commonly associated with depression.
Even for those without a diagnosis of depressive disorder, the mood and energy boosting effects of caffeine are probably some of the main reasons its use is so common. It’s something people joke about (but are probably being serious). For instance, the “don’t talk to me until I’ve had my coffee,” or think about how coffee shops have become a hot spot for social settings. It’s easier to socialize when you have an energy- and mood-boosting drink in your hand. Studies have also shown that a moderate consumption of caffeine is associated with reduced risk of depression and suicide, as well as an elevated mood.
Caffeine and ADHD
ADHD is another disorder that can be impacted by caffeine intake. Symptoms include a short attention span, impulsivity, and hyperactivity. People are often unable to sit still, have difficulty concentrating, interrupt frequently, and have excessive movements.
Interestingly, caffeine has been shown to help manage these ADHD symptoms by increasing focus and alertness. However, it’s important to talk with your doctor or psychiatrist before combining caffeine with other ADHD medications, and certainly do not stop taking ADHD meds without talking with your doctor first.
In Practice...
It's important to note the overlap between a lot of these conditions. Many people struggle with both depression and anxiety, or both ADHD and anxiety, for example. In these cases, it’s wise to be cautious about caffeine intake. When you drink coffee, how is your mood? Your sleep? Your stress levels? Your energy levels? It may be helpful to do a self-experiment, gradually decreasing your caffeine intake and then seeing how you feel without caffeine for a couple of weeks before reintroducing it and noticing the results.
You might also consider other beverages besides coffee that contain a smaller, more manageable amount of caffeine, such as tea. The L-theanine in tea (and especially green tea) has a calming effect, while the relatively low caffeine content can still have a positive impact on focus and alertness.
Caffeine primarily affects cognitive functioning. As we discussed earlier, it interacts with our nervous system and brain. It increases working memory, attention, alertness, reaction times, and, as we discussed today, it can improve mood. However, too much caffeine can lead to anxiety, paranoia, mood instability, and dependence on caffeine. Stopping or decreasing caffeine consumption can be challenging because of its withdrawal symptoms, like tiredness, headaches, and mood changes.
Caffeine isn’t for everyone, and can intensify anxiety and bipolar disorder, but it can also help improve mood and might help manage depression and ADHD.
I hope this two-part series was informational and useful. Thank you for reading!
Main research article for more information: https://www.mdpi.com/851178
Chart for caffeine intake in foods/beverages: https://www.cspinet.org/caffeine-chart
If you’re interested in learning more about how your dietary choices influence your mental and neurological health, reach out or schedule a virtual telehealth appointment with Erica, a mental health dietitian!
Madison McGaugh with Erica Golden, RDN, LD, IFNCP
Madison is a senior at Texas A&M University majoring in nutrition with a minor in psychology.
All those drinks have caffeine in them, something that most of us are very familiar with. On average, Americans consume 179 mg of caffeine a day. But what does caffeine even do? How does it impact our brain and mental health?
Caffeine is a stimulant. It plays a role in reducing drowsiness (which is why the morning cup of coffee is a go-to for many people). It has also been shown to increase concentration, motor coordination, and alertness. There is also an effect on learning and memory. Depending on genetics, people react to and breakdown caffeine differently. Some people are more sensitive to caffeine, so it takes longer to metabolize and its effects will last longer.
On average, caffeine will reach its peak effectiveness 30-60 minutes after consumption. Half of the caffeine consumed will break down within 2-10 hours—this wide range is a testament to how differently each person experiences caffeine!
Be wary—stimulants such as caffeine can be addictive. People also build up a tolerance, so they’ll consume more and more caffeine to feel the same effects that they did before. The problem is that your body is taking in a lot more caffeine. This can lead to sleep problems, jitters, increased heart rate, and overstimulation.
So, what does caffeine do to our brain? How does it impact different neurological disorders? Does it affect men and women differently in these disorders? We’re going to talk about caffeine and how it impacts our brain and mental health over two parts. In this first part, we will focus on neurological disorders. The second part will discuss caffeine’s impact on mental health.
There are theories that coffee plays a protective role when it comes to some neurological diseases, including stroke, dementia, and Parkinson’s disease. Looking at research studies, people who drank at least 3 cups of coffee a day had a reduced risk of stroke. With dementia, women (more so than men) had a reduced risk of developing dementia. In Parkinson’s disease, high caffeine intake has been associated with having a protective effect, including decreased rates of Parkinson’s disease in men. (In women the correlation is a lot smaller).
It’s also important to note that caffeine may help reduce the risk of developing these disorders, but once the disorder is present there is not a lot of research to suggest that caffeine will reduce the severity of the disorder.
What does this mean for us? More research needs to be done in further understanding and interpreting these connections. According to the USDA guidelines, the recommendation for a safe level of caffeine intake is less than 400 mg per day (or about four 8-oz cups of coffee). If you’re curious how much caffeine you are consuming every day, check out this chart with a wide variety of common food and beverages and their caffeine amount.
We’ve seen that some benefits of regular caffeine intake include protection against dementia and stroke more strongly in women, and protection against Parkinson’s disease in men.
Based on these research findings, caffeine intake seems to help decrease the risk of the development of neurological disorders such as dementia, stroke, and Parkinson’s disease for some people. This doesn’t mean that it is wise to drink a ton of caffeine every day, but—good news for coffee-lovers—a moderate amount daily might be helpful in maintaining good brain health.
If you’re interested in finding out how caffeine impacts risk of mental health disorders, stay tuned for part 2!
Main research article for more information: https://www.mdpi.com/851178
Chart for caffeine intake in foods/beverages: https://www.cspinet.org/caffeine-chart
If you’re interested in learning more about how your dietary choices influence your mental and neurological health, reach out or schedule a virtual telehealth appointment with Erica Golden, RDN, LD, IFNCP. She specializes in nutrition for mental and cognitive health.
Madison McGaugh
Madison is a senior at Texas A&M University majoring in nutrition with a minor in psychology.
Yes, that’s tongue-in-cheek. We might get better at managing our moods as we get older, and our emotions and energy levels are a bit more within our scope of control. This allows us to keep focused at work even when we’re hungry and eat an ice cream cone and not run around the living room yelling at the top of our lungs.
But truth be told, the same metabolic processes are still going on in our bodies, the same changes in our blood sugar, the same changes in energy level coursing throughout our muscles and brains. Just because we’re better at appearing stable doesn’t mean things are actually stable inside.
For example, have you ever seen the study that looked at the differences in decisions Israeli judges passed on similar cases, merely based on whether the hearing was held before or after their morning snack or lunch break? Even the best and most well-trained of us still get hangry.
Let’s say you get up in the morning and you’re in a rush. You pour yourself a cup of coffee with sugar and French vanilla creamer and head out. By the time you get to work, the coffee is gone, and your hunger is staved off for a while. But 10AM hits and you start to feel fatigued and restless again. You go for a second cup of coffee from the communal coffee pot, and grab a donut from the box someone brought in.
For lunch, you stop by the local sandwich shop to get a hoagie, some chips, and a soda. After lunch, you’re feeling pretty good and really getting stuff done, until about 2:30PM when the afternoon slump begins. You peruse the vending machine in the hall and grab a candy bar (just for today, because that big deadline is coming up and you need to be productive). By the time you get finished with your work, it’s 6PM and you’re exhausted.
You finally head home, ready to crash, only to find the house is a mess and no one has thought about dinner. You’re irritated and snappish. You head to the freezer, find a couple of frozen pizzas to throw in the oven, and snack on some corn chips while you wait for it to heat up. After the kids go to bed, it’s a glass of port wine, a big bowl of ice cream, and some TV to help you wind down. Then, around 11PM, you head to bed for some poor-quality sleep, only to wake up and do it again the next day.
Look, work and family life are tough enough on their own. You don’t need your diet to just be making things more difficult for you to handle. Between meals or snacks when you’re feeling sluggish, hangry, irritated, and bummed out, it’s very possible that your mood is low because your blood sugar is low.
On the opposite end of the spectrum, the low blood sugars tend to trigger us to crave sugar, in the body’s attempt to fix the problem. Once we’ve eaten something sweet, our blood sugar spikes and we feel much better – usually. But for some people, elevated blood sugar can feel more like anxiety or just the uncomfortable sensation of feeling “wired.”
So what do we do to stop this vicious cycle?
Obviously, the Standard American Diet (nicknamed the “SAD” diet for good reason) isn’t doing us much good with an average added sugar intake of 17 teaspoons per day, most of it from ultra-processed food.
Cutting back on the added sugar in your diet is the simplest and, honestly, the most important step in breaking the hangry-anxious-hangry cycle. Consider all the sources – even the “healthier” choices like honey, maple syrup. Consider artificial sweeteners, as well, as they can trick your body’s hormones into spiking (like insulin, the hormone that brings sugar from the bloodstream into your cells where it can be used as energy) – and so they might cause some of the same symptoms, even without the calories or actual sugar content.
Once you’ve done that, if you’re still feeling some symptoms, it might be time to consider balancing the nutrients in your meals and snacks, and decreasing the glycemic load of your meals and snacks.
By “balance,” I mean trying to eat foods or combinations of foods that have a variety of nutrients. For example, I really like my clients to eat protein and fiber pairings for snacks, as these combinations are very satisfying, slow-digesting, and provide a longer-term source of energy (and thus a more stable mood). Some common examples of this might be plain Greek yogurt with blueberries, cucumbers with hummus, a boiled egg and a sliced kiwi, or carrot sticks with almond butter.
Glycemic index (GI) is a measurement that ranks foods from 0-100 based on their impact on blood sugar, with pure glucose being 100. This can be very useful information to know if you’re trying to keep your blood sugar from spiking, but it’s only really useful in combination with the glycemic load (GL), which takes into account the amount of carbs per serving of the food. For example, watermelon and cantaloupe are technically high-GI foods, but since their digestible carb content per serving is relatively low, their GL is considered low. Your blood sugar probably won’t spike much after eating a serving of melon.
In general, eating a lower-glycemic load diet follows pretty well along with our general idea of what a healthy diet looks like. Foods that have lower glycemic load will usually be the foods that are:
- Low in added sugar
- Less processed
- High in fiber
- Appropriate serving sizes
- Nutrient-dense (often packed with vitamins and minerals, all of which are also healthy for your brain and mood!)
If you’re interested in learning more about how a healthy diet can boost your mood, reach out or schedule an appointment! I provide virtual telehealth nutrition care services in Colorado, California, Texas, Oklahoma, Indiana, Michigan, Virginia, Arizona, Alaska, Pennsylvania, New York, Connecticut, Washington, and Oregon, and I’d love to work with you!
Erica Golden, RDN, LD, IFNCP
Mental Health, Eating Disorders, and Gut Health Functional Dietitian Nutritionist
More and better research studies are still needed to tease out the impact of diet on autism, and what gut symptoms are related to the disease itself versus the dietary patterns and preferences of people with ASD. However, there has already been some fascinating research on ASD and the gut microbiota, as well as the potential impact of dietary changes on neurological symptoms.
Autism and the Microbiome
Altered levels of gut bacteria have been strongly associated with ASD. The average healthy child’s microbiome becomes fairly diverse as they eat an increasing variety of solid foods. However, kids with autism tend to have a much less diverse diet, which seems to lead to a sub-optimal gut microbiome.
Though actual gut microbiome composition varies widely, some bacterial families, like Clostridium (known for C. difficile, a common gut infection, but actually a common and generally harmless bacterial family in the gut), Firmicutes, and Proteobacteria tend to be increased in kids with ASD. The types of bacteria of which these kids have an abundance seem to produce too much of a type of short-chain fatty acid called propionic acid, and they have less of the beneficial bacteria that produce butyrate, a short-chain fatty acid with lots of positive effects on mental health and inflammation.
There are a few case reports of treatments with antibiotics have sometimes helped to reduce anxiety and improve some behavioral measures in kids with autism, which is another fascinating sign that the gut microbiome is involved in their neurological symptoms. However, treatment with antibiotics is (and should only be) short-term – and even short-term use can have negative consequences – so this seems unlikely to become a universal solution.
But probiotics and prebiotics – essentially live bacteria and their food – have a strong potential as a much safer treatment with far fewer side effects or risks.
Prebiotics and Probiotics
For example, a study combining an autism exclusion diet with the prebiotic supplement GOS, a type of prebiotic fiber found in dairy products, beans, and root vegetables, found significant improvements in abdominal pain and bowel habits with the exclusion diet, and additional improvements in anti-social behavior with 6 weeks of supplementation with GOS.
Other studies have looked at a variety of probiotics, including single, highly specialized strains such as L. Plantarum WCSF1, or broad-spectrum probiotic supplements containing multiple different strains (mostly in the Bifidobacterium and Lactobacillus families).
While a person with ASD may see benefits from a standard probiotic, strains and combinations of strains specifically studied for the particular condition you’re looking to treat are much more likely to be effective. Some significant improvements in both gut health and behavioral symptoms were seen with the probiotic blend delPRO in one study (though the study did not have a control group with which to compare the experimental group’s results) and with a blend of L. acidophilus, L. rhamnosus, and B. longum in a different study.
Restrictive and Elimination Diets
Lots of different restrictive diets have been proposed for people with autism, and in some cases they may be very helpful. Artificial colors have been linked to behavior disturbances in kids, and there are also concerns about contamination with toxins and heavy metals (though the FDA does require that all artificial colors be tested for lead, mercury, and arsenic).
Gluten-free and casein-free diets are commonly tried. While there are theories about how and why they work, there isn’t enough evidence to say whether they’re generally useful for people with ASD. Proponents feel that the studies that have been done on the GF-CF diet are too short-term to show much impact.
Some people with ASD may have other issues with gluten- and casein-containing foods, such as lactose intolerance, Celiac disease, or non-Celiac wheat sensitivity contributing to their GI symptoms. Others may have IBS, and may see improvements from a low-FODMAP diet (always followed by a re-introduction phase).
However, the more complex the diet, and the more difficult it is for the whole family to follow, the less likely it is to be feasible. Plus, for those with texture issues or those who have more difficulty eating enough variety as it is, it can be difficult to plan a diet that will give enough nutrition to meet their needs. It’s always a good idea to seek the guidance of your pediatrician, neurologist, or dietitian to discuss the pros and cons of restrictive and elimination-style diets, and how to plan them in a way that makes them nutritionally adequate and feasible for the whole family.
Adding to the Diet Instead of Taking Away?
For people with ASD, the diet is often already quite restricted based on personal preferences and aversions. Difficulties with food based on texture, color, and taste are common. Kids may also recognize that certain foods cause tummy pain, and refuse to eat these foods, even if they can’t verbalize this.
It’s important not to make mealtime a fight. Try to stay calm and don’t allow a power struggle to arise over certain foods. We all deserve the right to choose what foods to eat and what foods not to eat, and a person with autism is no exception. However, it may be helpful to try new foods in combination (such as finely chopped mushrooms sautéed and added to spaghetti sauce) or in different forms to make the texture easier to tolerate (such as peeled and crushed tomatoes in a salsa).
As much as possible, involve your child in the food preparation, and try to make it fun. Get your hands dirty together and allow your kids to acclimate to new foods outside of mealtimes to help decrease anxiety during mealtimes.
Very often, it’s more about what we add to the diet than what we take away. Eating more fruits, vegetables, beans and legumes, and whole grains can increase intake of those healthy, gut-nourishing prebiotic fibers that can then feed the gut microbiome, promote more butyrate production, and improve bowel health and GI symptoms.
Eating fermented foods when possible, such as yogurt with live and active cultures, can introduce probiotic “travelers” which can have a positive impact on the gut microbiome, as well.
Eating a greater variety of foods makes it more likely that the diet will have enough protein, vitamins, minerals, essential fats, and polyphenols to promote a healthy brain, gut, skin, immune system, etc.
And besides all that, focusing on food as the hero rather than the enemy can help to foster a healthier relationship with food, less fear of food, and possibly even less reactivity to it. We are all heavily influenced by our expectations, and people with autism are no exception to this, either.
Take-aways
The subject of neurological and developmental disorders and diet is a hotly debated topic, and one that is quite difficult to study. It’s also essential that it be individualized to the needs of the person with autism and their community or family.
If you’re interested in developing a supportive relationship with a dietitian who can assist with making some of these difficult decisions in a non-judgmental environment, and with helping make some of these recommendations more feasible for your family, please reach out to me or schedule an appointment.
I provide virtual nutrition care services to caregivers and parents living with people with autism, as well as directly to adults with ASD, throughout Colorado, California, Michigan, Arizona, Alaska, and Virginia.
Erica Golden, RDN, LD, IFNCP
Mental Health, Eating Disorders, and Gut Health Functional Dietitian Nutritionist
Let’s be clear: IBS is not always IBS. Sometimes there are other issues going on that medical professionals can miss, especially since IBS is often a “diagnosis of exclusion” (meaning, “we’ve ruled out everything else we can think of, so it must be IBS”). It’s always important to see a provider with a specialty in gut disorders to make sure that you get the correct diagnosis.
But let’s assume that the diagnosis is correct. What is going on in the gut that makes things so wonky in the brain? Or what’s going on in the brain that makes things so wonky in the gut?
Since the connection between the gut and the brain goes both ways (primarily via the vagus nerve, hormones, and the immune system), problems with either one can affect the other. And that means that there is a long list of factors that can impact the gut-brain axis and trigger mood disturbances, anxiety disorders, and IBS.
Dietary changes are often needed to calm an “irritated” gut, improve the composition and health of the gut microbiome, heal an intestinal barrier that has become too permeable (or “leaky”), provide adequate vitamins and minerals and amino acids to produce neurotransmitters necessary for mood stability, and more. Dietary changes sometimes include increasing fiber intake, eating more probiotic foods, eating a greater variety of foods, or, on the other hand, restricting certain foods that are common triggers (and then re-introducing them in a planned and careful way).
Lifestyle changes are often needed to calm an over-worked or over-stressed mind. We all have stress, and stress is not inherently bad or harmful, but often can be when we are dealing with it in an unhealthy way or when the stress is chronic and when we aren’t good at resting and relaxing in a healing way. CBT (cognitive behavioral therapy) has been helpful for many people with IBS, which is testament to the importance of managing this disorder from both a gut and a brain perspective. Yoga, stretching, and other forms of gentle movement are also helpful for some people.
Probiotic supplements, fiber supplements, and herbal supplements such as natural anti-microbials, demulcents, digestive bitters, and peppermint can be helpful for some people, but I would always recommend getting advice from a trained professional such as a gastroenterologist or dietitian before starting such supplements, as they need to be carefully selected and tailored to your needs.
Managing disorders of the gut-brain axis, like IBS, can be very challenging. You don’t have to go it alone. If you’re interested in working with a gut health dietitian, schedule a virtual telehealth nutritionist appointment with me or send me a message today.
PS - I was recently interviewed about this topic for DeliveryRank. You can read the interview here.
Erica Golden, RDN, LD, IFNCP
Registered Dietitian Nutritionist
Nutritional Psychiatry. Gut Health. Weight-Inclusive. Trauma-Informed.
Have you dealt with mental health or digestive issues for months or years without finding successful treatments? Are you seeking to manage mental health symptoms with fewer medications? Do you deal with disordered eating or a relationship with food that you wish you could improve? Has your diet been gradually becoming more and more restrictive over the years because of gut health issues like IBS or IBD and you're starting to feel like food is the enemy?
Please don't just keep dealing with these issues alone. Your struggles are real, and I'm here to listen and help. It's what I do, and what I love to do.
Please reach out to me or book a virtual dietitian appointment with me if you're interested in finding out more about what we can accomplish together. I work with clients in many states across the US via telehealth, including Colorado, California, Texas, Oklahoma, Indiana, Michigan, Virginia, Arizona, Alaska, Pennsylvania, New York, Connecticut, Washington, and Oregon, and I'd love to work with you.
Erica Golden, RDN, LD, IFNCP
Registered Dietitian Nutritionist
Nutritional Psychiatry. Gut Health. Weight-Inclusive. Trauma-Informed.
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Erica Golden, RDN
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