How To Identify Symptoms of Yeast Overgrowth in the Gut (From A Certified Nutritionist)


Do you suspect your gut might be playing host to a yeast party? 

Maybe it’s Candida overgrowth, but you’re not quite sure what to look for. 

Well, you’re in the right place. 

This guide will cut through the noise and give you the clear-cut signs and treatments of this common, yet often misdiagnosed condition. 

As a NASM-certified personal trainer and an ISSA Fitness nutritionist (not bragging, just want you to know that I know my stuff), I’ve poured over hundreds of scientific studies so you don’t have to, and here are the cliff notes. 

Stick with me, and by the end of this guide, you’ll have a 360-degree understanding of the causes, symptoms, treatments, and preventive steps for yeast overgrowth. 

Trust me, your gut will thank you.

Causes of Yeast Overgrowth: Risk Factors and Triggers

Let’s start with the causes, triggers, and risk factors of yeast overgrowth, especially Candida.

Candida is a type of fungus, a form of yeast, that is naturally occurring in small amounts in our mouth and intestines. The problems start when there’s too much of it or it spreads.

Now, you might wonder, what causes this excessive growth? 

Well, several factors can throw your gut’s balance off-kilter and create an environment conducive to yeast overgrowth.

Common Causes of Yeast Overgrowth

Several common causes can lead to an overgrowth of Candida. Here are the big ones:


  • Antibiotics kill both good and bad bacteria in your body. If your beneficial bacteria levels drop, Candida yeast can take over and overgrow.

A High-Sugar Diet: 

  • Yeast loves sugar. A diet high in sugar, refined carbohydrates, and alcohol can promote Candida growth by feeding the yeast.

Weakened Immune System: 

  • People with weakened immune systems are more susceptible to yeast overgrowth. This can include individuals with chronic illnesses, the elderly, and those with autoimmune conditions ( More on this later.).

Prolonged Stress: 

  • Chronic stress can weaken your immune system and make you more prone to yeast overgrowth.

Lack of Sleep: 

  • Just like stress, lack of sleep can lower your immune response, providing a suitable environment for Candida to thrive.

Use of Birth Control Pills: 

  • Research shows that the use of oral contraceptives can increase the risk of Candida overgrowth.


  • Those with diabetes, especially if poorly controlled, have increased sugar levels that can feed Candida and promote its growth.
common causes of yeast overgrowth in the gut

How Does Candida Overgrowth Spread?

Within your body, Candida can proliferate and spread when your immune system is compromised or when your gut flora balance is disrupted, allowing the yeast to overgrow and potentially invade other parts of your body. If your immune system is healthy and your beneficial bacteria are strong, your body can naturally control the yeast.

From person to person, a certain strain of Candida can spread through direct contact. This is more common in cases of oral or genital Candida infections. Again, if your antibodies and favorable microbes are robust, your body can naturally reduce the yeast. 

So, as you see, Candida overgrowth can be caused by various factors. There’s usually a mix of causes that lead to this condition. Now that we understand what has most commonly been linked to Candida overgrowth, let’s move to how you can identify it.

Common Symptoms of Yeast Overgrowth in the Gut

So, how do you know if you’re dealing with a yeast overgrowth situation?

The answer is to look for symptoms. 

They’re your body’s smoke signals. 

And knowing how to read them could be your first step in tackling Candida.

But here’s the tricky part…

Candida overgrowth symptoms often resemble other health issues. This makes it difficult to diagnose without proper testing. 

However, keeping an eye out for these signs can be a good start:

Common Symptoms to Look Out For

Chronic Fatigue

  • If you’re always tired, despite getting adequate sleep, you might want to consider yeast overgrowth as a possible cause.

Digestive Issues

  • Problems like bloating, constipation, diarrhea, and gas are common with Candida overgrowth

Recurring Yeast Infections 

  • Regular yeast infections could indicate a systemic problem – a yeast overgrowth

Oral Thrush 

  • This looks like a white coating on your tongue and can indicate a yeast problem

Sinus Infections

  • Frequent sinus infections could be a sign. Yes, that too.

Joint Pain

  • Unexplained joint pains could be your body hinting at Candida

Brain Fog

  • Trouble focusing, poor memory, or lack of mental clarity may also be symptoms.

Skin Reactions

  • Acne and/or rashes are almost always present when there is too much yeast in the body.
common symptoms of yeast overgrowth in the gut

These are the big ones. But remember…

Candida overgrowth is a systemic issue. It can cause a range of symptoms that differ from person to person.

And it doesn’t stop there…

If left unchecked, Candida overgrowth has been linked to more serious health problems like leaky gut syndrome and autoimmune disorders.

That’s why it’s crucial to take any potential symptoms seriously.

So, if you’re nodding your head at some of these symptoms, what should you do next? 

The only accurate way to confirm your suspicion is through testing.

What Tests To Use To Properly Diagnose Candida Overgrowth

Stool Tests: 

  • These are the most common diagnostic tests. They identify Candida in your colon and/or lower intestines. Just as you suspected, it requires a stool analysis to  check for Candida overgrowth (10). I know, super gross!

Blood Tests: 

  • There are two types. One checks for IgG, IgA, and IgM Candida antibodies in your blood (19). High levels indicate an overgrowth. The other test detects D-Arabinitol, a waste product of Candida yeast overgrowth. An elevated result points to an overgrowth. This test is a bit more invasive since you need a blood draw. 


  • This test looks for a D-Arabinitol/L-Arabinitol ratio in your urine. Candida produces D-Arabinitol. When high amounts are found, it often means an overgrowth is present. You obviously need to provide a urine sample for this one.

Sometimes these tests can be conducted at your doctor’s office if he or she is willing to order them. These tests may be completed with other routine tests. 

Some of these tests can be completed at laboratory testing facilities, and some can be done at home with mail-in testing kits. 

Depending on the test, your doctor, and your insurance, some of these tests may be covered by your medical insurance. Some of these tests may be entirely your personal expense. I know, and I agree; it isn’t fair! 

But there is something else that you should know…

These tests are not foolproof. 

You might need to combine them with a detailed history and physical examination by a knowledgeable healthcare provider for an accurate diagnosis.

And remember, Candida is a normal part of your body’s gut flora. Detecting Candida isn’t a problem — it’s the overgrowth that is concerning. 

If you suspect Candida overgrowth, don’t panic. Many treatments (most are easy and inexpensive)  can bring it under control. Stay with me, we will get to that! 

tests to diagnose candida overgrowth in the gut

The Link Between Yeast Overgrowth and Leaky Gut Syndrome

Have you heard of Leaky Gut Syndrome? Trust me, it’s related. 

What’s Leaky Gut Syndrome?

In simple terms, it’s when your intestinal wall gets damaged, allowing toxins, microbes, and undigested food particles to “leak” into your bloodstream. Sounds nasty, right?

Here’s why it happens:

Your gut lining is a barrier controlling what gets into your bloodstream to be transported to your cells for nutrition. When healthy, it selectively allows vital nutrients to pass through while keeping harmful substances out.

But when it’s compromised, unwanted particles slip through into your bloodstream. This can trigger an immune response, leading to inflammation and a whole range of health issues like food sensitivities, mood swings, and autoimmune diseases.

So, what does this have to do with Candida overgrowth?

Examination of the connection between yeast overgrowth and leaky gut

Candida can trigger leaky gut. When Candida changes from its yeast form to its fungal form, it creates root-like structures that can penetrate your intestinal walls, leading to leaky gut.

But also, a leaky gut can trigger Candida. If the junctures in the intestinal lining are open, unwanted particles including yeast can freely pass into the bloodstream. 

Regardless of which one caused the other, the link between Candida overgrowth and leaky gut is so strong that they almost always occur together.

The Candida Overgrowth & Estrogen Dominance Connection

Next, let’s talk about Candida and estrogen dominance. 

I promise I won’t digress too far. 

Estrogen dominance occurs when there’s an imbalance between estrogen and progesterone in a woman’s body. 

This condition can lead to a range of health issues, like PMS, fibroids, and thyroid dysfunction.

Now, you might be asking: what does Candida have to do with this?

Interestingly, some studies have shown that too much estrogen in relation to progesterone can promote the growth of Candida

This is why women may be more prone to yeast infections during times when estrogen levels are high, such as during pregnancy or when using certain types of birth control 

It’s clear that Candida overgrowth doesn’t exist in a vacuum. It interacts with various bodily systems, making its management a vital part of overall health.

The Candida Overgrowth & Autoimmune Connection

Autoimmune conditions are also seen with Candida. Candida often leads to autoimmune issues; also, having an autoimmune condition can cause Candida. 

Does that make sense?  

Some research suggests that Candida overgrowth might trigger autoimmune responses in the body. This occurs when the immune system mistakenly attacks its own tissues, causing conditions like rheumatoid arthritis, lupus, or thyroid disease.

How does Candida factor into this?

When Candida overgrowth occurs, it can lead to leaky gut syndrome (as we’ve discussed earlier) which gets us started down the unpleasant path to autoimmunity. 

When the gut becomes permeable, particles like toxins, microbes, and food can escape into the bloodstream, triggering an immune response, and ultimately an autoimmune condition.

While the exact mechanisms are still being studied, a key theory points to the immune system’s response to extra Candida yeast. 

Now, let’s turn our attention to diet.

The Impact of Diet on Gut Yeast Overgrowth

Believe it or not, what you eat plays a huge role in Candida overgrowth.

Certain foods, particularly those high in sugars and refined carbs, feed Candida, promoting overgrowth. That’s right, Candida LOVES sugar.

So, if your diet is high in sugar, you’re basically throwing a Candida party in your gut and inviting yeast!

But here’s the good news…

By making some strategic dietary changes, you can take back control.

Recommendations for Dietary Changes To Take Back Control

Consider cutting back on sugars, refined carbs, and alcohol. These feed Candida and can worsen overgrowth. If you lower the sugars in your diet, the Candida yeast will starve and die off. 

Instead, load up on non-starchy vegetables, lean proteins, and healthy fats. These won’t spike your blood sugar and feed Candida. You may want to consider a ketogenic diet. 

And don’t forget about probiotics

Foods like yogurt, sauerkraut, and kimchi are packed with these beneficial bacteria. They help balance your gut flora and keep Candida in check.

Natural Remedies and Treatments for Yeast Overgrowth

Are you convinced that you have too much yeast, and you’re ready to tackle Candida overgrowth head-on?

Let’s delve into the natural remedies first. I always recommend natural treatments for any condition first because they usually have fewer side effects and do not require detoxification like medications.

Many people are having success with natural solutions to restore balance to their gut. Here are a few:

List of natural remedies


  • These friendly bacteria increase the beneficial bacteria in your digestive tract and can help keep Candida in check, rebalancing your gut flora.


  • Garlic has powerful antifungal properties that can help reduce excess  Candida (15).

Coconut oil: 

  • The caprylic acid in coconut oil is also antifungal and can kill Candida yeast, making it a potent natural remedy.

Apple cider vinegar: 

  • ACV can help restore your body’s natural pH, discouraging Candida overgrowth. Candida thrives in an acidic pH, and ACV is alkalizing. 

If you want to learn more about gut health and how to heal it naturally, check out an in-depth guide here.

Now, it’s important to remember that natural remedies can help, but they’re not always enough on their own, especially in severe cases. So always consult with a healthcare provider.

natural remedies for yeast overgrowth in the gut

There are also conventional treatment options…

Conventional Medical Treatments for Gut Yeast Overgrowth

Antifungal medications are usually the go-to treatment for Candida overgrowth. These can include fluconazole, itraconazole, and nystatin. They work by attacking the fungal cell wall, killing off the Candida yeast.

But they’re not without side effects. 

Some people experience nausea, diarrhea, and stomach pain. 

Plus, Candida can become resistant to these medications, particularly when they’re used long-term.

Now, let’s talk about the Candida die-off.

Candida Die-Off Symptoms You May Experience

When you start treating Candida, you may experience a series of symptoms known as “die-off,” or Herxheimer reaction. 

This is your body’s response to the toxins released by the dying Candida cells (18).

Die-off symptoms can include fatigue, brain fog, gastrointestinal distress, and flu-like symptoms. 

These symptoms can be unsettling, but they’re actually a sign that your treatment is working (39).

Tips for Preventing Yeast Overgrowth and Maintaining Gut Health

Preventing yeast overgrowth and keeping your gut happy doesn’t have to be complicated. Here is  a summary of tips to consider:

1. Balanced Diet: 

Stick to a diet rich in vegetables, lean proteins, and healthy fats (48). Avoid processed foods, refined sugars, and excessive alcohol, which can fuel yeast growth (49).

2. Probiotics: 

Incorporating a quality probiotic supplement or probiotic foods can promote a balanced gut environment by introducing beneficial bacteria that can keep Candida under control (50). 

3. Natural Remedies:

These include garlic, coconut oil, and apple cider vinegar. These are antifungal and antimicrobial which help to reduce yeast. You can find them at any health food store or online. Try to incorporate them into your daily diet. 

4. L-glutamine: 

L-Glutamine is an amino acid that serves as a primary nutrient for the cells lining the gut, promoting their growth and repair. 

By supporting the integrity of the intestinal barrier, a L-Glutamine supplement may help prevent leaky gut syndrome, where partially digested food, toxins, and yeast can migrate into the bloodstream. 

This, in turn, can help control yeast overgrowth, as a healthier, well-functioning gut environment can better maintain balance and resist colonization by opportunistic microbes like Candida.

5. Stress Management: 

High-stress levels can weaken your immune system and make you more susceptible to yeast overgrowth. Regular exercise, mindfulness practices, and adequate sleep can help manage stress levels (51).

6. Regular Check-ups: 

Regular check-ups with your doctor can help catch any potential issues early, including signs of yeast overgrowth.

Remember, everyone’s body is different, and what works for one person might not work for another. Don’t be afraid to experiment and see what works best for you.

You’ve Got Questions, I’ve Got Answers

I always get these questions from clients when the topic of yeast overgrowth comes up, so I think they may be helpful for you too. 

How do I know if I have Candida overgrowth? 

Look for the symptoms we discussed earlier, such as fatigue, digestive distress, reoccurring yeast or sinus infections, joint pain, brain fog, and skin conditions.  You can also use diagnostic tests including stool tests, blood tests, and urinalysis.

How do you get rid of yeast buildup in your gut? 

A balanced diet, probiotic supplementation, certain foods, L-Glutamine, stress and sleep management, and in some cases, antifungal medications, can help manage yeast overgrowth (53).

How long does it take to cure Candida overgrowth? 

There’s no quick fix, but a comprehensive approach involving dietary changes, supplements, and potentially antifungal medications can be effective (55).

 You should start to notice improvements in your symptoms within a few weeks, but it may take up to a year to completely manage your yeast overgrowth. 

What happens if Candida yeast is left untreated? 

If left untreated, Candida overgrowth can lead to more serious complications like leaky gut syndrome and an increased risk of autoimmune disorders (56).

Wrapping It Up

Congratulations, you’ve made it through the winding journey of understanding yeast overgrowth in the gut. From causes and symptoms to treatments and prevention, we’ve covered it all.


Remember, maintaining a balanced gut environment is key to keeping Candida at bay, so make sure to keep your diet under control, and get the proper tests if you’re experiencing many of the common symptoms. 

And even though the road to a healthy gut can seem complex, every small step makes a difference. 

And remember, always trust your gut… unless your gut is filled with too much Candida. 


  1. Kim, J., Sudbery, P. (2011). Candida albicans, a major human fungal pathogen. Journal of Microbiology. 49(2): 171–177. Candida albicans, a major human fungal pathogen – PubMed
  2. Suez J, et al. (2018). Post-Antibiotic Gut Mucosal Microbiome Reconstitution Is Impaired by Probiotics and Improved by Autologous FMT. Cell. 174(6):1406-1423.e16. Post-Antibiotic Gut Mucosal Microbiome Reconstitution Is … – PubMed
  3. Romani L. (2011). Immunity to fungal infections. Nat Rev Immunol. 11(4):275-288. Immunity to fungal infections – PubMed
  4. Segerstrom, S. C., & Miller, G. E. (2004). Psychological Stress and the Human Immune System: A Meta-Analytic Study of 30 Years of Inquiry. Psychological Bulletin, 130(4), 601–630. Psychological stress and the human immune system: a meta …
  5. Kumamoto, C. A. (2011). Inflammation and gastrointestinal Candida colonization. Curr Opin Microbiol, 14(4), 386-391. Inflammation and gastrointestinal Candida colonization – PubMed
  6. Sobel, J. D. (1988). Pathogenesis and treatment of recurrent vulvovaginal candidiasis. Clinical microbiology reviews, 1(4), 335-348. Pathogenesis and treatment of recurrent vulvovaginal candidiasis
  7. Ellepola, A. N. B., & Morrison, C. J. (2005). Laboratory diagnosis of invasive candidiasis. Journal of Microbiology, 43, 65-84. Laboratory diagnosis of invasive candidiasis – PubMed
  8. Iliev, I. D., et al. (2012). Interactions between commensal fungi and the C-type lectin receptor Dectin-1 influence colitis. Science, 336(6086), 1314-1317. Interactions between commensal fungi and the C-type lectin …
  9. Leaky Gut Syndrome (2019). Harvard Health Publishing, Harvard Medical School. Leaky gut: What is it, and what does it mean for you? – Harvard Health
  10. Fasano, A. (2012). Leaky gut and autoimmune diseases. Clinical reviews in allergy & immunology, 42(1), 71-78. Leaky gut and autoimmune diseases – PubMed
  11. Tripathi, A., et al. (2009). Identification of human zonulin, a physiological modulator of tight junctions, as prehaptoglobin-2. Proceedings of the National Academy of Sciences, 106(39), 16799-16804. Identification of human zonulin, a physiological modulator of tight …
  12. Hatakka, K., et al. (2007). Probiotics reduce the prevalence of oral candida in the elderly–a randomized controlled trial. Journal of dental research, 86(2), 125-130. Probiotics reduce the prevalence of oral candida in the elderly
  13. Shuford, J. A., et al. (2005). Antifungal activities of origanum oil against Candida. Molecular and cellular biochemistry, 228(1-2), 111-117. Antifungal activities of origanum oil against Candida albicans
  14. Falony, G., et al. (2015). Population-level analysis of gut microbiome variation. Science, 352(6285), 560-564. Population-level analysis of gut microbiome variation – PubMed
  15. Mayer, F. L., et al. (2013). Candida albicans pathogenicity mechanisms. Virulence, 4(2), 119-128. Candida albicans pathogenicity mechanisms – PMC – NCBI

Nolwen Cameron

Nolwen Cameron has had a lifelong passion for exercise and nutrition. She loves to educate and coach people to help them feel and look healthy inside and outside. She is an ISSA Certified Specialist in Fitness Nutrition and NASM Certified Personal Trainer.

Like what you read? We would love a share :)