Stress
Understanding How Stress Affects Our Health
Stress plays a significant role in overall well-being, influencing immune function, gut health, and chronic disease risk. While stress is not considered a direct cause of Candida overgrowth or SIBO, chronic stress may influence immune function, gut motility, sleep quality, and lifestyle habits that can affect digestive health. Chronic stress may weaken immune resilience, disrupt gut function, and contribute to inflammatory processes throughout the body. Understanding this connection is essential for maintaining optimal health and preventing long-term complications.
Why Chronic Stress Matters
Chronic stress is believed to contribute to a large proportion of modern health complaints and is associated with many of the symptoms that bring people to healthcare practitioners.Chronic stress has been associated with a wide range of health conditions, including digestive disorders, cardiovascular disease, and mental health challenges.
In my clinical experience, immune dysfunction tends to manifest in highly individual ways, often influenced by genetic predisposition. If a patient has a family history of heart disease, arthritis, or asthma, stress may influence how these conditions develop or how symptoms are experienced. Similarly, nervous and sensitive individuals may experience more pronounced effects on their digestive system, nervous system, or adrenal function.
We’ve Specialised in Stress and Gut Health For Years
Since 2007, our clinic has worked with thousands of people experiencing stress-related health challenges, burnout, digestive complaints, and ongoing fatigue. Throughout that time, we’ve seen first-hand how chronic stress can influence many aspects of health, particularly gut function, sleep quality, energy levels, and overall wellbeing.
More than two decades ago, I co-founded Nutrisearch, a company focused on practitioner education throughout Australia and New Zealand. We helped bring internationally recognised experts in stress, nutrition, and natural health to the Southern Hemisphere through educational conferences and professional training events.
One of the most important lessons I’ve learned over the years is that stress rarely affects just one part of the body. The nervous system, digestive system, immune system, and hormone system are closely interconnected. When stress becomes chronic, these systems can become less resilient, potentially influencing digestion, sleep, mood, energy levels, and recovery.
Research suggests that chronic stress may affect immune function, gut microbial balance, and hormone regulation. By recognising stress early and developing healthy coping strategies, we can better support long-term health and overall wellbeing.
Stress and Gut Health at a Glance
- Stress can affect digestion and gut function.
- Stress may influence the balance of gut bacteria and other microbes.
- Chronic stress can impact sleep quality, immune function, and recovery.
- Stress may contribute to flare-ups of digestive symptoms in susceptible individuals.
- Managing stress is an important part of supporting overall gut health and wellbeing.
Estimated reading time: 27 minutes
Table of contents
- Understanding How Stress Affects Our Health
- Why Chronic Stress Matters
- We’ve Specialised in Stress and Gut Health For Years
- Stress and the Gut-Brain Connection
- Stress and Candida Overgrowth
- Our Appetite And Stress
- Can Stress Lead To Eating For Emotional Comfort?
- Diet Influences Our Mood and Cognitive Function
- Are You a Hurried or Worried Person?
- Stress Can Also Make Us Sick
- Health Builders and Health Busters
- Health BUSTERS : Weakening Your Body’s Defences
- Health BUILDERS : Strengthening Our Body’s Defences
- How Stress May Affect Different Body Systems
- Health Conditions Associated With Chronic Stress
- Bringing It All Together
- Recommendations for Reducing Stress in Your Life
- Frequently Asked Questions About Stress and Gut Health
Stress and the Gut-Brain Connection
The gut and brain communicate through a two-way system known as the gut-brain axis. This means that stress doesn’t just affect gut function—gut imbalances can also influence cognition, mood, and mental health.
Have you ever felt irritable or anxious for no clear reason? It might have originated in your gut, not your brain. The gut contains as many—if not more—neurons than the spinal cord, which is why researchers call it the “second brain” (Appleton et al., 2018).
When you’re stressed, signals from your brain alter gut function, affecting digestion, gut bacteria balance, and nutrient absorption. Over time, these changes contribute to gut inflammation, weakened immunity, and increased susceptibility to infections like Candida overgrowth and SIBO.
Stress and Candida Overgrowth
Key Point
Stress is not considered a direct cause of Candida overgrowth or SIBO. However, chronic stress may influence factors such as immune function, sleep quality, digestion, food choices, and gut microbial balance, all of which can affect digestive health and recovery.
The connection between stress and gut-related conditions is complex. While not everyone who experiences chronic stress will develop an infection, stress may influence conditions that affect microbial balance in the gut. Managing stress through proper nutrition, exercise, relaxation techniques, and sleep is crucial for preventing health issues and supporting long-term well-being.
A balanced approach to nutrition and daily habits that help reduce stress is essential—not just for combating Candida overgrowth and improving the gut microbiome, but also for boosting energy and vitality, maintaining an ideal body weight, and enhancing longevity.
Stress Alters Our Gut Function
Chronic stress may affect gut health in several ways, including changes in intestinal permeability, digestion, immune function, and microbial balance.This allows harmful bacterial and fungal particles and toxins and other harmful particles to enter our bloodstream, triggering immune responses that contribute to wide-spread inflammation and various health conditions (Groot et al., 2000).
Our gut, immune system, and hormone system are closely connected, meaning stress can disrupt all three. Disruptions caused by periods of stress creates a cycle where poor gut health weakens immunity, potentially affecting digestive health, microbial balance, and recovery.
SIBO and Stress
A recent study found that some individuals with SIBO can have a tendency to be more anxious and emotionally sensitive compared to those without it. They also scored lower on extroversion, meaning they were less outgoing. Additionally, those with SIBO experienced higher stress levels in different ways, including emotional tension, external pressures, and internal stress (Kossewska et al., 2022).
Diet and Lifestyle Effects
Key Take-Away
Our Appetite And Stress
The strong connection between gut health and the nervous system explains why stress directly impacts mood, digestion, and overall well-being. Scientific research confirms that the gut lining influences brain function and that the gut is highly sensitive to emotions (Carabotti 2015).
You’ve probably felt it—whether it’s excitement, anxiety, or sadness, your emotions can manifest as physical sensations in your gut. That “gut feeling” is real, a direct result of the gut-brain connection. Many people intuitively sense this link but may not fully understand how deeply stress affects digestion.
Think about how your stomach reacts when you’re nervous—perhaps before an exam, a job interview, or a date. The fluttering sensation, nausea, or even an upset stomach is your body’s response to stress. Public speaking, one of the most common fears, can trigger a racing heart, shaky hands, and digestive discomfort, all linked to the body’s “fight or flight” response.
When your brain perceives a threat, even an imagined one, it redirects blood flow away from digestion toward muscles, preparing your body to react. This shift slows digestion, leading to that familiar “butterfly” feeling. Chronic stress, however, has more lasting effects, contributing to digestive disorders, bloating, and poor nutrient absorption (Foster 2013).
Key Take-Away
Can Stress Lead To Eating For Emotional Comfort?
Are you stressed and eating for emotional comfort? Did you know that certain foods can affect how your body responds to a stressful situation in your life? The same way that it will react when you worry about your mortgage payments, your waistline, or your job security, your body can react to a diet high in sugars and refined foods (white flour, white sugar, soda drinks, processed foods, etc.).
Studies have shown that emotional eating was often associated with an effort to improve physical and psychological conditions, like controlling body weight.(Ljubicic 2023)
You might find my article on Eating for Fatigue interesting. Eating in this way will strengthen balance your blood sugar levels and improve your immune and hormone responses. If you’d like to read about Adrenal Fatigue just click on the link. You’ll find all you need to know about stress and more at ericbakker.com
Diet Influences Our Mood and Cognitive Function
Serotonin, often called one of our “happy chemicals,” plays a vital role in mood regulation and sleep quality. Since most serotonin receptors are located in the gut, our diet and nutritional status have a profound impact on how we feel. When gut health is compromised, serotonin production may decrease, affecting both digestion and mental well-being.
Interestingly, while serotonin is produced in both the brain and gut, its structure remains similar regardless of its origin. However, an overgrowth of harmful bacteria in the gut can disrupt serotonin synthesis. Pathogenic bacteria exploit microbiota-derived nutrients to fuel their growth, creating imbalances and forming biofilms that further weaken the intestinal environment (Bäumler 2016).
Mood Disorders Common with Candida Overgrowth
In my clinical practice, comprehensive stool tests often revealed high levels of pathogenic bacteria alongside Candida or other yeast overgrowth. These patients frequently struggled with digestive issues such as bloating, constipation, and diarrhea, but many also reported mood disorders and poor cognitive function.
Low serotonin levels in the gut can directly contribute to constipation, much like low serotonin in the brain is linked to anxiety, insomnia, and depression (O’Mahonya & Clarkea 2014).
Research suggests serotonin signalling plays an important role in both digestive function and mood regulation.
Whole Foods Create A Happier Mood
Diet also plays a key role in mental health. A recent study found that consuming higher amounts of healthy fats and protein was associated with lower anxiety and depression, whereas a diet high in carbohydrates correlated with increased stress, anxiety, and depression (Martin 2023). This aligns with what I’ve observed—patients who patients who regularly consumed highly processed foods often reported poorer energy, mood, and digestive health.
Key Take-Away
Are You a Hurried or Worried Person?
Are you doing or expecting too much? You might be surprised to learn how quickly you answer the phone, eat, take a shower, drive, shop for groceries, or perform any of the other hundred regular activities. Have you ever allowed yourself to take it a little easier?
According to one researcher, leisure is the new productivity.(Paul 2014) Too many of the patients I see live hurried, anxious lives and have developed an obsession with finishing one task first before diving headfirst into several others without ever coming up for breath.
Relax your shoulders and jaw when you answer your phone, slow down and take your time while eating, and chew each mouthful more than you normally would. Give yourself plenty of time to get to those meetings, and when you do, be on time—allow five minutes instead of ten.
Have a to-do list, sure, but prioritise it, and make sure to put relaxing, spending time with loved ones, and walking at the top of the list. You’ll perform THAT much better when you learn the art of relaxation.
Stress Can Also Make Us Sick
Stress affects everyone differently. Some individuals can handle high levels of emotional stress for extended periods, while others struggle with even moderate stress. The ability to cope with stress depends on factors such as genetics, coping mechanisms, personality type, and social support.
Interestingly, not all stress is harmful. Short-term stress can enhance immune function, but chronic stress has the opposite effect, suppressing immune responses and increasing the risk of illness.
From my experience, mild stress before a big medical presentation at a medical conference has been beneficial, helping me stay focused and energised. However, when we are living and working under ongoing, unmanaged stress, it negatively affects our health. If you’re interested in learning more about stress and health, be sure to subscribe to my YouTube channel for upcoming health discussions, including topics involving stress, Candida overgrowth, and so much more.
Health Builders and Health Busters
Many people experience recurring infections due to weakened immune defences and increased susceptibility. Stress plays a significant role in this equation, determining whether your body resists or succumbs to infections like Candida, SIBO, and other gut-related conditions.
Imagine a spectrum: on one end, we have resistance—strong immune function, resilience, and a low-stress lifestyle. On the other end, there’s susceptibility—a weakened immune system, chronic stress, and an increased risk of infection. The more stress you experience, the further you shift toward susceptibility. Conversely, engaging in health-promoting behaviours moves you towards resistance, strengthening your body’s ability to fend off infections naturally.
Stress Increases the Risk of Any Infection
So how exactly does stress contribute to infections? The answer lies in how stress impacts your immune and hormone function. A high-stress lifestyle weakens immunity, making you more vulnerable to disease. On the flip side, adopting health-building habits—like relaxation techniques, a balanced diet, and proper sleep—can enhance immune resilience, reducing the risk of infections.
Yeast infections, bacterial overgrowth, and gut disorders don’t just appear out of nowhere. They take hold when your body becomes more susceptible due to health-damaging habits. Over the years, I’ve seen common patterns in patients struggling with chronic infections.
Personally I find these patterns can be grouped into two categories: the Health Busters and the Health Builders.
Health BUSTERS: Weakening Your Body’s Defences
Health busters are habits that compromise your immune system and increase the likelihood of infections.
They contribute to stress, inflammation, and poor gut health, making it harder for your body to fight off harmful microbes. Here are some of the biggest offenders:
Mental and Emotional Health Busters
Physical Health Busters
These factors not only disrupt your stress response but also directly impact your immune system, increasing susceptibility to infections like Candida, IBS, and SIBO.
Health BUILDERS: Strengthening Our Body’s Defences
Health builders, on the other hand, help your body resist infections and maintain long-term wellness. By replacing health-busting habits with these immune-supporting practices, you create a strong foundation for optimal health.
Mental and Emotional Health Builders
Physical Health Builders
The Result: A Stronger, More Resilient You
When you focus on building health rather than simply treating disease, your immune system becomes more capable of handling infections naturally.
Relying heavily on medications or dietary supplements without addressing underlying health-busting habits never creates lasting wellness. A well-supported immune system reduces your risk of recurring conditions like Candida, SIBO, allergies, and inflammatory diseases.
By strengthening your body’s stress response, you’ll notice benefits like:
The choice is yours—will you be a health builder or a health buster? Start making small, positive changes today and watch how your body transforms!
How Stress May Affect Different Body Systems
For much of modern medical history, Western medicine largely dismissed the idea that stress could directly contribute to physical disease. Up until the mid-to-late 20th century, the dominant medical model focused on infectious agents (like bacteria and viruses) and genetic factors as the primary causes of disease.
Stress and emotions were often considered “psychological issues” rather than “physiological issues” ones with measurable health effects.
However, this began to change in the 20th century with research in psychosomatic medicine (mind-body), endocrinology (hormones), and neuro-immunology (nervous and immune system connection).
A few notable key historical shifts in medical thinking include:
Today, the role of stress in disease is widely accepted, though some conventional doctors still underestimate its significance compared to infections, genetics, and lifestyle factors like diet and exercise. Naturopathic and integrative medicine practitioners have been quicker to recognise stress as a major contributor to chronic illness. Let’s now look at a range of conditions and studies linking them to stress a contributing cause.
Health Conditions Associated With Chronic Stress
Research has explored associations between chronic stress and a wide range of health outcomes. Stress is rarely the sole cause of disease, but it may influence biological processes involved in health and recovery.
Scientific research supports the link between chronic stress and the following health conditions:
Addressing chronic stress through effective management strategies is crucial for maintaining overall health and preventing these stress-related conditions. We’ll talk more about solutions soon.
Could Chronic Stress Be Affecting Your Energy and Recovery?
Do You Have Symptoms of Burnout or HPA-Axis Dysregulation? Do you experience persistent fatigue, burnout, or difficulty recovering from stress? You’ll have a better chance of defeating a fungal or bacterial infection if you rebuild your exhausted and worn-out stress mechanism. Click on the link and read the article on adrenal fatigue, it’s comprehensive and contains everything you’ll ever need to know about it.
Perhaps you previously treated your yeast infection (or SIBO) and made a partial recovery but not a full one. Perhaps you experience relapses frequently, recover, and then fall ill once more.
In my experience, doctors frequently ignore the fact that their patients have experienced numerous stressful life events, including a chronic yeast infection or gut problem, which is a big stress in and of itself, and instead focus on treating the problem only with diet and supplements.
By addressing chronic stress and supporting recovery, you may place your body in a better position to heal and regain resilience.
Could a Thyroid Issue Be Affecting Your Recovery?
The thyroid gland plays a major role in regulating metabolism, energy production, body temperature, digestive function, and immune health. When thyroid function becomes impaired, many people experience symptoms such as fatigue, constipation, brain fog, dry skin, weight changes, and low mood.
In clinical practice, I’ve often seen people with ongoing digestive complaints also report symptoms that suggest an underlying thyroid imbalance. While thyroid problems do not directly cause Candida overgrowth or SIBO, they may influence factors such as gut motility, immune function, and overall resilience.
Research has shown that thyroid hormones interact closely with the immune system, and chronic stress may influence thyroid activity through complex hormonal pathways.
Emerging research has also identified links between gut microbial balance and autoimmune thyroid conditions, highlighting the important relationship between gut health, immunity, and thyroid function.
If you suspect a thyroid issue, it’s important to seek appropriate testing and professional guidance rather than self-diagnosing. A qualified healthcare practitioner can help determine whether thyroid dysfunction may be contributing to symptoms such as fatigue, poor recovery, digestive complaints, or recurrent health issues.
When addressing chronic digestive concerns, it’s worth considering the bigger picture. Factors such as stress, sleep quality, nutrition, gut health, immune function, and thyroid health often interact with one another. Looking at these systems together can provide a more complete understanding of why symptoms persist and what steps may support recovery.
Bringing It All Together
If there’s one thing I’d like you to take away from this page, it’s that stress doesn’t operate in isolation. It influences many interconnected systems throughout the body, including digestion, sleep, immune function, hormone balance, and overall resilience.
While stress is rarely the sole reason someone develops digestive symptoms, it can make recovery more challenging when combined with poor sleep, dietary imbalances, illness, medication use, or ongoing life pressures.
Over the years, I’ve found that people often achieve better results when they take a broader view of their health rather than focusing on a single symptom or diagnosis. Improving daily habits, supporting gut health, prioritising restorative sleep, eating nourishing foods, staying active, and developing effective stress-management strategies can all contribute to improved wellbeing and digestive health.
Small, consistent changes often produce the most meaningful long-term results.
Looking for a Structured Approach?
If you’d like practical guidance on nutrition, lifestyle habits, stress management, and digestive health support, our Ultimate Candida Cleanse Program provides a step-by-step framework designed to help you make sustainable changes with confidence.
Learn more about the program and decide whether it’s the right fit for your health journey.
Recommendations for Reducing Stress in Your Life
Many people don’t realise that persistent stress is a modern issue. Our bodies evolved to handle acute physical emergencies, but today, we activate the same physiological stress response for months or years due to worries about finances, relationships, or career pressures (Salleh 2008). This constant activation is what leads to stress-related disease.
Stress has a profound impact on immune function, with studies showing that it can suppress protective immune responses while amplifying harmful ones (Dhabhar 2014). Yet, I’ve been amazed by how many patients I’ve seen who don’t even acknowledge having stress in their lives. Stress is like a leaky tap—slowly dripping in the background, often unnoticed until it causes serious health issues.
Take Small, Actionable Steps
To break this cycle, take active steps to reduce unnecessary stress. If you’re a chronic worrier, identify what’s causing your anxiety. Are you overwhelmed by work, health concerns, or family responsibilities? Instead of dwelling on the problem, shift your focus to finding small, actionable solutions. Taking even minor steps each day will empower you and gradually build resilience. Over time, you’ll become more capable of handling bigger challenges and reducing stress’s impact on your health.
Identify and Fix Your “Stress Leaks”
The key to reducing stress is identifying and fixing these hidden stressors. Take a moment to ask yourself: What stressors in your life can you control or minimise? More importantly, why and how are you allowing stress to affect you? By addressing stress head-on, you can make a significant difference in your overall well-being.
Listen to Your Body’s Stress Signals
Pay attention to physical signs of stress. Are your jaw, neck, shoulders, or back tense? Do you find yourself speaking, walking, or eating too quickly? Are you relying on painkillers, caffeine, or other stimulants to push through exhaustion? These are all signs that your body is under chronic stress.
Tackle the Biggest Stressor First
One of the best ways to manage stress is to focus on the biggest stressor in your life right now. Stress builds up over time, so by eliminating or neutralising your major source of stress, you’ll likely find that smaller stressors become much more manageable. Your body is naturally designed to handle stress, but when the load becomes too great—whether due to duration, intensity, or sheer quantity—your immune system weakens, making you more vulnerable to illness.
Learn How to Master the Art of Relaxation
Every day, slow down and relax until it becomes second nature. chronic psychological stress has been associated with changes in immune function and may influence susceptibility to recurrent infections.One study clearly identified psychological stress associated with chronic and recurring vaginal candidiasis. (Irving 1998).
The Big Key Take-Away
To minimise the negative impact of stress on gut and immune health, consider incorporating the following strategies into your daily routine:
Frequently Asked Questions About Stress and Gut Health
Stress is not considered a direct cause of Candida overgrowth. However, chronic stress may influence factors such as immune function, sleep quality, food choices, and digestive health. These changes can affect the body’s ability to maintain a healthy balance of microorganisms in the gut.
Many people report that digestive symptoms seem to flare during periods of stress. Stress may affect gut motility, digestion, sleep, and immune responses, which can make existing symptoms feel more noticeable or difficult to manage.
Stress and the digestive system are closely connected through the gut-brain axis. Chronic stress may influence digestion, gut motility, sleep quality, appetite, and the balance of microorganisms living in the gut.
The gut-brain axis refers to the communication network connecting the digestive system and the brain. Signals travel in both directions, which helps explain why stress can affect digestion and why digestive problems can sometimes influence mood and wellbeing.
Short-term stress can temporarily support certain immune responses, but chronic stress has been associated with changes in immune function. This is one reason why long-term stress is often considered an important factor in overall health and recovery.
Helpful strategies may include regular physical activity, quality sleep, spending time outdoors, mindfulness practices, breathing exercises, social connection, and eating a balanced diet rich in whole foods. Small, consistent habits often provide the greatest long-term benefit.
Poor sleep and stress often influence each other. Inadequate sleep may affect mood, recovery, immune function, and digestive health, making it more difficult for the body to cope with ongoing stress.
Thank’s for reading our stress page, we trust the information has been beneficial to you and that you’ve picked up a few hints and tips that can help make you life a lot easier.
