Diabetes and Yeast Infections: Causes, Symptoms & Natural Support

Understanding the Link Between Diabetes and Yeast Infections

Diabetes and yeast infections are closely linked because elevated blood sugar levels can create conditions that encourage Candida to grow while also affecting the body’s normal immune defences. Although anyone can develop a yeast infection, people with diabetes—particularly if blood glucose is not well controlled—are more likely to experience infections that recur or take longer to resolve.

Understanding why this happens can help you recognise symptoms early, reduce your risk of recurrence and know when it’s time to seek medical advice

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Why Does Diabetes Increase the Risk of Yeast Infections?

Several factors make people with diabetes more susceptible to recurrent Candida infections. Rather than a single cause, it’s usually the combination of elevated blood sugar, changes in immune function and an environment that favours yeast growth.

Factor	How It Increases Risk
High blood sugar	Elevated blood glucose creates conditions that favour Candida growth.
Weakened immune response	High blood sugar can impair immune function, making it harder for the body to keep Candida under control.
Sugar in urine and body fluids	Higher glucose levels in urine, saliva and mucosal secretions can provide a more favourable environment for Candida.
Warm, moist skin folds	Areas such as the groin, under the breasts and between skin folds provide ideal conditions for yeast to multiply.
Slower healing	Diabetes may slow tissue repair, allowing infections to persist or recur.

How Diabetes Can Increase the Risk of Yeast Infections

The infographic below provides a simplified overview of how persistently elevated blood sugar may increase the risk of recurrent yeast infections. While several factors contribute to Candida overgrowth, understanding this pathway helps explain why good blood sugar management is an important part of prevention.

Why Are People with Diabetes More Prone to Yeast Infections?

People with diabetes are more likely to develop yeast infections (candidiasis) because elevated blood sugar levels create conditions that allow Candida yeast to thrive. At the same time, diabetes can affect the body’s normal immune response, making it more difficult to control the growth of yeast that naturally lives on the skin, in the mouth, and in the gastrointestinal and genital tracts. Research also shows that people with poorly controlled diabetes are more likely to experience recurrent or persistent yeast infections than those with well-managed blood glucose levels.  

Several factors contribute to this increased risk.

High Blood Sugar Feeds Candida

Candida species normally exist in balance with other microorganisms in the body. However, when blood glucose levels remain elevated, excess glucose can also be present in saliva, urine and other body fluids. This provides an environment that supports yeast growth, particularly in warm, moist areas such as the mouth, skin folds and genital region.

Changes in Immune Function

Diabetes, particularly when blood sugar is not well controlled, can impair several aspects of the immune system. White blood cells may be less effective at recognising, engulfing and destroying invading microorganisms, including Candida. This reduced immune response allows yeast to multiply more easily and may contribute to infections that recur or take longer to resolve.  

Disruption of the Body’s Natural Microbial Balance

The body normally maintains a healthy balance between bacteria, fungi and the immune system. Changes in blood glucose, antibiotic use, hormonal fluctuations and other factors can disturb this balance, giving Candida an opportunity to overgrow. Recent research continues to highlight the important role that the microbiome and host immune system play in keeping Candida in check.  

Slower Healing and Ongoing Inflammation

Persistently elevated blood sugar can also slow tissue repair and contribute to chronic inflammation. This means that once a yeast infection develops, it may take longer to heal and may be more likely to recur if the underlying blood glucose levels remain elevated.  

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“Lasting improvement often came when we looked at the bigger picture—blood sugar balance, digestive health, diet, medication history, stress, and the gut microbiome.
Addressing the underlying drivers was often just as important as treating the infection.”

— Eric Bakker, N.D.

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What is Candida?

Most yeast infections associated with diabetes are caused by a type of yeast called Candida albicans. Candida is a naturally occurring fungus that lives harmlessly on the skin and in the mouth, digestive tract and genital area of many healthy people. Under normal circumstances, it exists in balance with beneficial bacteria and the body’s immune system.

Problems arise when that balance is disrupted. Elevated blood sugar levels, antibiotic use, hormonal changes, a weakened immune response and other factors can allow Candida to multiply more rapidly than normal, leading to an overgrowth known as candidiasis.

Although Candida albicans causes the majority of yeast infections, other Candida species, such as Candida glabrata, can also cause infection, particularly in people with diabetes or weakened immune systems. Identifying the correct cause is important because different species may respond differently to treatment.

If you’re new to Candida, our comprehensive guide explains what Candida overgrowth is, the symptoms it can cause, and how it affects the body.

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Where Can Candida Cause Infections?

In people with diabetes, Candida can affect several parts of the body. The most common include:

• Vaginal yeast infections (vulvovaginal candidiasis), causing itching, irritation, soreness and abnormal discharge. Read our detailed guide to Can Diabetes Cause Vaginal Yeast Infections? to learn more about symptoms, treatment and prevention in women with diabetes.
• Oral thrush, which commonly causes creamy white patches on the tongue, inside the cheeks or roof of the mouth, along with soreness, altered taste and sometimes difficulty swallowing. Read our comprehensive guide to Can Diabetes Cause Oral Thrush? to learn why people with diabetes are more susceptible, the symptoms to watch for, treatment options and practical ways to help reduce recurrence.
• Skin candidiasis, particularly in warm, moist skin folds such as the groin, under the breasts or between the toes.
• Male genital yeast infections, which may cause redness, itching and irritation beneath the foreskin or on the head of the penis.

People with poorly controlled diabetes are also more likely to experience recurrent infections or infections that take longer to clear.

“One of the biggest misconceptions I saw in practice was that Candida is something you ‘catch’.
In reality, Candida is already part of the normal microbial community in many healthy people.
The problem isn’t usually the presence of Candida—it’s the conditions that allow it to overgrow.”

— Eric Bakker, N.D.

Can Recurrent Yeast Infections Be a Sign of Diabetes?

Yes. Recurrent or persistent yeast infections can sometimes be an early warning sign of undiagnosed diabetes or prediabetes, particularly when there is no obvious explanation for why the infections keep returning. While a single yeast infection is common and usually not a cause for concern, frequent infections may indicate that persistently elevated blood glucose levels are creating an environment where Candida can thrive.

Women experiencing recurrent vaginal yeast infections may also find our dedicated guide, Can Diabetes Cause Vaginal Yeast Infections?, helpful, as it explains why these infections occur more frequently in diabetes and how to help reduce recurrence.

Healthcare professionals recognise that recurrent fungal infections may be associated with diabetes, especially when they occur alongside other symptoms such as increased thirst, frequent urination, unexplained fatigue, blurred vision or slow wound healing. For this reason, people experiencing repeated yeast infections may be advised to have their blood glucose or HbA1c levels checked as part of a broader medical assessment.

It’s important to remember that recurrent yeast infections do not automatically mean you have diabetes. Hormonal changes, antibiotic use, pregnancy, certain medications and immune disorders can also increase the risk. However, because diabetes is a recognised risk factor, it’s worth discussing repeated infections with your healthcare provider rather than simply treating each episode as it occurs.

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When Should You Speak With Your Doctor?

You should arrange a medical review if you:

• Experience three or more yeast infections within a year
• Develop infections that keep returning soon after treatment
• Have severe or persistent symptoms
• Notice increased thirst, frequent urination or unexplained fatigue alongside recurrent infections
• Have diabetes but find infections becoming more frequent or difficult to treat

Early diagnosis and good blood sugar management may help reduce the frequency of future infections while also lowering the risk of other diabetes-related complications.

What Are the Symptoms of Yeast Infections in People with Diabetes?

People with diabetes can experience the same symptoms of yeast infections as anyone else, but the infections may occur more frequently, be more severe, or take longer to resolve if blood sugar levels remain elevated. Symptoms vary depending on the part of the body affected.

Vaginal Yeast Infection Symptoms

Vaginal yeast infections (vulvovaginal candidiasis) are the most common type of Candida infection in women. Symptoms can range from mild irritation to significant discomfort and may become more frequent or persistent in women with poorly controlled diabetes. Recognising the early signs can help you seek appropriate treatment and reduce the risk of recurrence.

Women with vaginal candidiasis may experience:

• Intense itching or irritation
• Redness and swelling around the vulva
• A thick, white discharge often described as “cottage cheese-like”
• Burning during urination
• Pain or discomfort during sexual intercourse

Want to learn more? Our comprehensive guide to Can Diabetes Cause Vaginal Yeast Infections? explores why women with diabetes are more likely to develop recurrent vaginal yeast infections, the symptoms to watch for, treatment options, and practical ways to help reduce recurrence.

Male Yeast Infection Symptoms

Men may notice:

• Redness or irritation on the head of the penis
• Itching or burning
• White patches or discharge beneath the foreskin
• Discomfort during urination or intercourse

Although less common than vaginal yeast infections, men with poorly controlled diabetes are at increased risk, particularly if they are uncircumcised.

Want to learn more? Read our comprehensive guide to Male Yeast Infection Symptoms: What to Look For, where we explain the early warning signs, common causes, diagnosis and natural ways to support recovery.

You may also find our guide to Vaginal Thrush: Natural Ways to Support Recovery and Prevent Recurrence helpful, where we explain treatment options and practical ways to support recovery.

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Oral Thrush Symptoms

Oral thrush may cause:

• Creamy white patches on the tongue, inner cheeks or roof of the mouth
• Redness or soreness
• Cracking at the corners of the mouth
• Difficulty swallowing in more severe cases
• Altered taste

Want to learn more? Read our comprehensive guides to Can Diabetes Cause Oral Thrush? to explore the connection between diabetes and oral Candida infections, and Oral Thrush: Symptoms, Causes, and Natural Support for a detailed guide to symptoms, diagnosis, treatment and practical ways to support oral and digestive health.

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Skin Yeast Infection Symptoms

Candida can also affect the skin, particularly in warm, moist areas such as:

• Under the breasts
• Groin
• Armpits
• Between the toes
• Skin folds

Symptoms often include redness, itching, soreness and a rash that may develop small surrounding spots known as “satellite lesions.”

Want to learn more? Read our comprehensive guide to Candida on Skin: Healing, and Preventing Candida Rash, where we explain why skin yeast infections develop, common symptoms, treatment options and practical ways to help reduce recurrence.

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How Are Yeast Infections Diagnosed in People with Diabetes?

Diagnosing a yeast infection usually begins with a discussion of your symptoms and a physical examination. In many cases, healthcare providers can identify common Candida infections based on their appearance and location. However, if infections are severe, keep returning, or fail to respond to standard treatment, additional testing may be recommended to confirm the diagnosis and rule out other conditions.

If recurrent yeast infections are accompanied by symptoms of high blood sugar, your healthcare provider may also recommend testing for diabetes or prediabetes.

Diagnosing a Yeast Infection

Depending on the type of infection, your healthcare provider may recommend:

Vaginal Yeast Infections

A vaginal examination may be performed, and a small sample of vaginal discharge collected. The sample can be examined under a microscope or sent to a laboratory to identify the Candida species responsible for the infection.

Oral Thrush

Oral thrush is often diagnosed through a clinical examination. In more persistent or unusual cases, a swab may be taken to confirm the diagnosis and determine the most appropriate treatment.

Skin Yeast Infections

Skin candidiasis can often be recognised by its appearance. Occasionally, a skin scraping or swab may be collected to confirm that Candida is the cause of the rash.

Common Yeast Infections in Diabetes

Infection	Symptoms	Common Location
Vaginal candidiasis	Itching, discharge	Vagina
Oral thrush	White patches	Mouth
Skin candidiasis	Rash, redness	Skin folds
Male candidiasis	Redness, irritation	Penis

Testing for Diabetes

If recurrent yeast infections raise suspicion of diabetes, your healthcare provider may recommend one or more blood tests, including:

• HbA1c (glycated haemoglobin): Measures your average blood glucose levels over the previous two to three months.
• Fasting blood glucose: Measures blood sugar after an overnight fast.
• Random blood glucose: May be used in some situations, particularly if symptoms are severe.
• Oral glucose tolerance test (OGTT): Sometimes used to diagnose diabetes or prediabetes in selected individuals.

Identifying and managing diabetes early is important not only for reducing the risk of recurrent yeast infections but also for helping prevent long-term complications affecting the heart, kidneys, eyes and nervous system.

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How Are Yeast Infections Treated if You Have Diabetes?

The treatment of yeast infections in people with diabetes is generally similar to treatment in people without diabetes. However, good blood sugar management plays an important role in helping infections resolve and reducing the likelihood of recurrence.

In most cases, successful treatment involves addressing both the infection itself and the underlying factors that allowed it to develop.

Antifungal Medications

Depending on the type and severity of the infection, your healthcare provider may recommend:

• Antifungal creams or ointments
• Vaginal pessaries or suppositories
• Oral antifungal medications
• Antifungal mouth rinses or lozenges for oral thrush

The choice of treatment depends on the location of the infection, the Candida species involved and whether the infection is occurring for the first time or has become recurrent.

Blood Sugar Management

One of the most important ways to reduce the risk of ongoing yeast infections is to maintain blood glucose levels within your target range.

Improving blood sugar control may help:

• Reduce the amount of glucose available for Candida growth.
• Support normal immune function.
• Improve healing.
• Lower the risk of future infections.

For many people, treating the infection without addressing persistently elevated blood sugar can result in a cycle of repeated infections.

Lifestyle and Self-Care

Alongside medical treatment, simple lifestyle measures may help reduce the risk of recurrence:

• Keep skin folds clean and dry.
• Wear loose-fitting, breathable cotton underwear.
• Change out of wet clothing promptly after swimming or exercise.
• Avoid unnecessary antibiotic use where appropriate and prescribed.
• Follow your diabetes management plan.
• Eat a balanced diet that supports healthy blood sugar levels.

These measures cannot treat an active infection on their own but may help create conditions that are less favourable for Candida overgrowth.

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Can Diet Help Reduce the Risk of Yeast Infections?

Diet alone cannot cure a yeast infection. However, maintaining healthy blood sugar levels through a balanced diet is one of the most important ways people with diabetes can reduce their risk of recurrent Candida infections. Stable blood glucose supports normal immune function and creates an environment that is less favourable for excessive yeast growth.

Current diabetes guidelines consistently recommend eating a nutrient-rich diet that emphasises vegetables, legumes, whole grains, lean protein, healthy fats and high-fibre foods while limiting highly processed foods and added sugars. These dietary patterns not only support blood sugar management but also contribute to overall metabolic and digestive health.

Blood Sugar Control Matters

One of the strongest links between diabetes and recurrent yeast infections is blood glucose control.

When blood sugar remains persistently elevated, excess glucose may also be present in saliva, urine and other body fluids, providing an additional food source for Candida. Improving blood sugar management may therefore help reduce the frequency of recurrent infections while supporting overall health.

Rather than focusing on eliminating individual foods, many healthcare professionals recommend developing long-term eating habits that promote stable blood glucose levels and are sustainable over time.

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What About the Candida Diet?

Many people who experience recurrent yeast infections are interested in the Candida Diet, which typically involves reducing refined sugars and highly processed foods while emphasising whole, nutrient-dense foods.

Although more high-quality research is needed to determine whether specific Candida diets directly reduce Candida overgrowth, limiting foods that contribute to poor blood sugar control aligns with current dietary recommendations for people living with diabetes.

If you’re interested in learning more, our comprehensive guide explains the principles of the Candida Diet, foods to enjoy, and foods that are commonly limited during the programme.

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Supporting a Healthy Gut Microbiome

Scientists increasingly recognise the important relationship between the gut microbiome, immune function and overall health.

A diverse and balanced gut microbiome helps maintain the body’s natural microbial ecosystem and plays an important role in supporting immune responses. While researchers continue to investigate how the gut microbiome influences Candida colonisation and infection, maintaining gut health is considered an important part of overall wellbeing.

Simple ways to support gut health include:

• Eating a wide variety of vegetables and other fibre-rich plant foods.
• Including legumes, nuts and seeds where appropriate.
• Choosing whole grains that fit within your diabetes management plan.
• Staying physically active.
• Getting adequate sleep.
• Managing stress.

Can Herbal Botanicals Support a Healthy Microbial Balance?

Alongside probiotics and digestive enzymes, some people choose to include herbal botanical supplements as part of their broader gut health routine. Traditional herbs such as oregano, garlic, pau d’arco, neem and cinnamon have been used for centuries in herbal practice, and many have been studied in laboratory settings for their interactions with Candida species.

While laboratory and preclinical research has shown promising activity for some botanical ingredients, human clinical evidence remains limited. For this reason, herbal supplements should not be viewed as a replacement for appropriate medical treatment or good diabetes management.

Instead, they may be considered as part of a broader wellness approach that includes maintaining healthy blood sugar levels, eating a nutrient-dense diet, supporting the gut microbiome and following advice from your healthcare provider.

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Can Probiotics Help?

Probiotics are beneficial microorganisms that may help support a healthy balance of bacteria within the gut and, in some cases, other parts of the body.

Research suggests that certain probiotic strains may help reduce the recurrence of some Candida infections, particularly when used alongside standard medical treatment. However, probiotics should not be considered a replacement for antifungal therapy or appropriate diabetes management.

More research is still needed to determine which probiotic strains, doses and treatment durations are most effective for different types of Candida infections.

Probiotics and the Gut Microbiome

Probiotics are live microorganisms that, when consumed in adequate amounts, may provide health benefits by helping maintain the balance of beneficial bacteria within the gut.

The gastrointestinal tract contains trillions of microorganisms that interact with the immune system, digestive system and metabolism. Scientists continue to investigate how changes in the gut microbiome influence Candida colonisation and overall health.

Some clinical studies suggest certain probiotic strains may help reduce the recurrence of vulvovaginal candidiasis when used alongside conventional antifungal treatment. However, evidence varies depending on the probiotic strains studied, and further high-quality research is still needed before firm recommendations can be made.

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What About Digestive Enzymes?

Digestive enzymes help break down carbohydrates, proteins and fats into smaller molecules that can be absorbed by the body. While digestive enzymes do not kill Candida, they may support healthy digestion in people who have difficulty digesting certain foods.

Some specialised enzyme blends have also been investigated for their ability to break down components of microbial biofilms in laboratory settings. Although this area of research is promising, much of the evidence remains preliminary, and more human clinical studies are needed to understand whether these findings translate into meaningful health outcomes.

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Can You Prevent Yeast Infections if You Have Diabetes?

Although yeast infections cannot always be prevented, maintaining good diabetes management and healthy lifestyle habits may help reduce the risk of recurrence.

The following strategies are commonly recommended by healthcare professionals:

Keep Blood Sugar Well Managed

Maintaining blood glucose within your target range is one of the most effective ways to reduce the conditions that encourage Candida overgrowth.

Practise Good Personal Hygiene

Keeping skin clean and dry—particularly in warm, moist areas such as skin folds—may help reduce fungal growth.

Choose breathable cotton underwear where possible and change out of damp clothing promptly after exercise or swimming.

Avoid Unnecessary Antibiotic Use

Antibiotics can disrupt the body’s normal bacterial balance, allowing Candida to multiply more easily. Antibiotics should always be taken exactly as prescribed, but unnecessary use should be avoided.

Support Your Gut Health

Eating a varied, fibre-rich diet, staying physically active and getting adequate sleep all contribute to a healthy gut microbiome and support overall wellbeing.

Seek Early Treatment

Treating yeast infections promptly may help prevent symptoms from worsening and reduce discomfort. If infections continue to recur, discuss this with your healthcare provider rather than repeatedly self-treating.

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Frequently Asked Questions

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Conclusion

The relationship between diabetes and yeast infections is well established. Elevated blood sugar levels can create conditions that allow Candida to grow more readily, while diabetes may also reduce the body’s natural ability to keep yeast under control. As a result, people living with diabetes are more likely to experience recurrent or persistent yeast infections than the general population.

The good news is that many of the factors contributing to recurrent infections can be addressed. Working with your healthcare provider to manage blood sugar levels, seeking prompt treatment when infections occur and supporting your overall gut and metabolic health may all help reduce the likelihood of future episodes.

If you’re experiencing frequent yeast infections, don’t ignore them or simply treat each one in isolation. Recurrent infections can sometimes be an important clue that your body is signalling an underlying issue worth investigating.

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References

American Diabetes Association Professional Practice Committee. (2026). Standards of Care in Diabetes—2026. Diabetes Care, 49(Supplement_1). https://doi.org/10.2337/dc26-SINT

Bradfield Strydom, M., Khan, S., Walpola, R. L., Ware, R. S., & Tiralongo, E. (2023). Interplay of the microbiome and antifungal therapy in recurrent vulvovaginal candidiasis: A narrative review. Journal of Medical Microbiology, 72(5), 001685. https://doi.org/10.1099/jmm.0.001685

Centers for Disease Control and Prevention. (2021, updated periodically). Sexually Transmitted Infections Treatment Guidelines: Vulvovaginal Candidiasis. https://www.cdc.gov/std/treatment-guidelines/candidiasis.htm

Ford, T., Talbot, A., Hayward, G., Tonkin-Crine, S., Ziebland, S., & McNiven, A. (2024). Managing recurrent vulvovaginal thrush from patient and healthcare professional perspectives: A systematic review and thematic synthesis. Patient Education and Counseling, 123, 108–117. https://doi.org/10.1016/j.pec.2023.108117

Hill, C., Guarner, F., Reid, G., Gibson, G. R., Merenstein, D. J., Pot, B., Morelli, L., Canani, R. B., Flint, H. J., Salminen, S., Calder, P. C., & Sanders, M. E. (2014). Expert consensus document: The International Scientific Association for Probiotics and Prebiotics consensus statement on the scope and appropriate use of the term probiotic. Nature Reviews Gastroenterology & Hepatology, 11(8), 506–514. https://doi.org/10.1038/nrgastro.2014.66

Shahabudin, S., Azmi, N. S., Lani, M. N., Mukhtar, M., & Hossain, M. S. (2024). Candida albicans skin infection in diabetic patients: An updated review of pathogenesis and management. Mycoses, 67(2), e13753. https://doi.org/10.1111/myc.13753

Sobel, J. D., et al. (2026). Managing vulvovaginal candidiasis: A state-of-the-art review. Clinical Infectious Diseases, 82(3), 371–382.

World Health Organization. (2025). Diabetes. https://www.who.int/news-room/fact-sheets/detail/diabetes

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Continue Reading

• Can Diabetes Cause Vaginal Yeast Infections?
• Can Diabetes Cause Oral Thrush?
• Hydration, Oral Hygiene, and the Candida Diet
• Yeast Infections: Causes, Symptoms, Treatment & Natural Support
• Candida Diet: Complete Food List and Beginner’s Guide

This article is intended for educational purposes only and should not be considered medical advice. If you have diabetes, recurrent yeast infections, or symptoms that concern you, consult your healthcare provider for diagnosis and personalised treatment. Never delay seeking medical advice because of information you have read online.