What is Candida albicans? Candida albicans is a yeast — a type of fungus — that can live naturally on the skin and in the mouth, digestive tract and genital area. Its presence does not automatically mean you have an infection. When Candida grows excessively in a particular area and causes symptoms, the condition is called candidiasis, or a yeast infection.
This guide explains Candida yeast infections, recognised symptoms, diagnosis and treatment. It also examines PubMed research showing that sodium bicarbonate can inhibit Candida growth and, in certain experiments, cause fungal cell death. We distinguish these laboratory results from clinical treatment of candidiasis and explain the bowel-wellbeing options available at our Holborn clinic.
Important: If you have new, persistent or recurrent symptoms, seek advice from your GP, pharmacist or sexual health clinic. A self-diagnosis of “Candida overgrowth” can overlook other medical conditions.
What is Candida albicans yeast?
Candida is a genus of fungi that includes several species. Candida albicans is one of the best-known causes of candidiasis. It can be part of the body’s normal microbiota without causing illness.
The key distinction is between colonisation (Candida is present without harming the person) and infection (Candida causes inflammation or disease). A positive laboratory test needs interpretation alongside symptoms, examination and the sample site.
Although people often use “Candida yeast” and “yeast infection” as though they mean the same thing, the organism and the illness are not identical. Other Candida species can also cause yeast infections.
Candida yeast infection symptoms: what to look for
Symptoms depend on where the infection occurs. A diagnosis should be based on the affected area rather than a general list of unrelated symptoms.
Vaginal and genital thrush
- Itching, irritation, redness or soreness around the vulva and vagina.
- White, usually non-smelly vaginal discharge; discomfort during urination or sex.
- In men, irritation or redness of the glans or foreskin, sometimes with discharge.
Oral thrush
- White patches in the mouth, sometimes with red or sore areas underneath.
- A sore tongue, altered taste, cracks at the corners of the mouth or discomfort when eating.
- Pain or difficulty swallowing requires prompt medical assessment, particularly in people with reduced immunity.
Candida skin infections
Skin candidiasis may cause an itchy or painful rash, particularly in warm, moist skin folds. Not every rash is fungal, and similar symptoms may have other causes.
Invasive candidiasis
Invasive candidiasis involves the bloodstream or internal organs. It is very different from ordinary thrush and mainly affects people with important risk factors, such as serious illness, prolonged hospital admission or an intravenous catheter. Fever and chills in someone at risk require urgent medical assessment.
What increases the risk of a Candida infection?
Risk factors vary by the type and location of infection. Recognised examples include:
- Recent or prolonged antibiotic treatment, which can alter normal microbial communities.
- Diabetes, especially when blood glucose is not well controlled.
- Pregnancy or certain hormonal changes in vaginal candidiasis.
- Medicines that affect immunity, including corticosteroids or chemotherapy.
- A weakened immune system associated with an underlying condition or treatment.
- Dentures, dry mouth or inhaled steroid medication in oral thrush.
- For invasive disease, serious hospital illness, central venous lines, recent major surgery and certain intensive-care treatments.
Having a risk factor does not mean that you have candidiasis. Equally, common thrush can occur in otherwise healthy people.
How is Candida albicans infection diagnosed?
A clinician will consider the symptoms, location of the problem, medical history and examination findings. Depending on the case, they may take a vaginal swab, a sample from the skin or mouth, or use microscopy and fungal culture.
For recurring or treatment-resistant symptoms, testing can help check whether Candida is responsible, whether another infection is present and whether a less common Candida species is involved. Blood cultures and other investigations are used when invasive candidiasis is suspected in a hospital setting.
A positive swab alone does not always prove an active infection. Candida may be present without symptoms. Similarly, bloating, fatigue or a craving for sugar is not sufficient evidence of intestinal candidiasis.
Candida albicans, yeast cells and pseudohyphae explained
Under a microscope, Candida albicans may appear as individual budding yeast cells, elongated chains called pseudohyphae, or longer true hyphae. These are different growth forms of the same organism, not separate infections.
Pseudohyphae can appear in laboratory samples from some Candida infections, but their significance depends on the body site, symptoms, and clinical findings. They are not automatically evidence of dangerous bloodstream infection.
This distinction is especially useful if you have seen “pseudohyphae” mentioned in a microscopy report. Ask the clinician who requested the test to interpret it in context. See the British Society for Immunology’s explanation of Candida growth forms.
Evidence-based treatment for candidiasis
Antifungal medicines are the established treatment for symptomatic candidiasis. The formulation and duration depend on the type of infection, how severe it is, other health conditions and whether symptoms keep returning.
- Vaginal thrush: antifungal pessaries, creams or oral medicines may be used where appropriate, following pharmacist or clinician advice.
- Oral thrush: an antifungal mouth gel or another prescribed medicine may be recommended.
- Skin candidiasis: topical antifungal medicines and measures to keep the affected area dry may help.
- Recurrent or complicated infections: a clinician may recommend testing and a longer or different treatment plan.
- Invasive candidiasis: hospital treatment with systemic antifungal medicines is required.
If this is your first suspected genital infection, you are pregnant, symptoms recur, or over-the-counter treatment has not worked, consult a healthcare professional rather than repeatedly treating yourself. See NHS guidance on thrush.
Does a low-sugar diet or a probiotic cure Candida?
A balanced diet, adequate sleep and appropriate management of long-term conditions support general health. However, there is no established clinical evidence that a restrictive “Candida cleanse” diet eradicates candidiasis or replaces antifungal treatment. See the Mayo Clinic guidance on Candida cleanse diets.
Candida can use sugars in laboratory conditions, but this does not prove that avoiding fruit or all carbohydrates will treat an infection in the body. Unnecessary exclusion diets may make nutrition harder to maintain.
Probiotics are being studied for various conditions, but they should not be presented as a proven stand-alone cure for vaginal, oral or intestinal Candida infection. Discuss supplements with a clinician if you have a weakened immune system or a serious health condition.
Candida in the digestive system: normal presence versus illness
Candida may be present in the gastrointestinal tract as part of the normal microbial community. Finding it in the gut does not, by itself, diagnose a disease or explain chronic bloating, constipation, fatigue or changes in bowel habits.
These symptoms have many possible causes, including dietary factors, medication effects and gastrointestinal conditions. If they persist, a GP can advise on the appropriate assessment. Avoid assuming that a long list of unrelated symptoms is caused by “systemic Candida”.
The rare, serious form called invasive candidiasis is primarily associated with major medical risk factors. It should not be confused with a non-specific claim of “gut yeast overgrowth”.
Sodium bicarbonate and Candida albicans: what does research show?
Sodium bicarbonate (bicarbonate of soda, NaHCO₃) has demonstrated antifungal effects against Candida under laboratory conditions. Published research reports inhibition of fungal growth, reduced adhesion to surfaces and altered biofilm development. In certain experimental settings, researchers have also observed necrosis (cell death) in Candida cells exposed to sodium bicarbonate.
These are relevant scientific findings, not simply a traditional claim. However, experiments performed on cultured fungi, laboratory surfaces or experimental gels cannot establish that any particular colonic treatment eliminates Candida from the human bowel.
PubMed evidence: growth inhibition and Candida cell death
- Letscher-Bru et al. (2013), Mycopathologia — growth inhibition. Researchers tested sodium bicarbonate against 70 fungal isolates, including 18 yeasts. The minimum concentration inhibiting 90% of yeasts (MIC₉₀) in the reported laboratory media was 5 g/L; 10 g/L inhibited the growth of 80% of all fungal isolates tested. PubMed PMID 22991095.
- Lastauskienė et al. (2014), Current Microbiology — cell death in laboratory cultures. The investigators tested several compounds on C. albicans, C. guilliermondii and C. lusitaniae. They reported that the minimum inhibitory concentrations of sodium bicarbonate and potassium carbonate induced necrosis in Candida cells under the experimental conditions. PubMed PMID 24752490.
- de Sousa et al. (2009), Brazilian Oral Research — reduced attachment. A 5% sodium bicarbonate solution significantly reduced viable C. albicans attached to acrylic denture material compared with water (p = 0.0156). This was a laboratory surface study, not treatment of an intestinal infection. PubMed PMID 20027444.
- Tomás et al. (2021), European Journal of Pharmaceutical Sciences — experimental gel. Among several formulations assessed in vitro, a gel containing 5% sodium bicarbonate was most effective at inhibiting C. albicans growth. The study developed a possible vaginal formulation; it did not investigate colon hydrotherapy. PubMed PMID 33122009.
Newer research: biofilms and hyphal formation
In a 2025 laboratory study published in Heliyon, Faria-Gonçalves and colleagues examined a reference C. albicans strain and 12 clinical isolates from vulvovaginal candidiasis. They reported a minimum inhibitory concentration of 12.5 mg/mL. At concentrations at least twice that level, the proportion of cells producing hyphae decreased by 93%, and biofilm mass was reduced by 50% under the tested conditions. The authors also observed synergy with fluconazole in vitro. They described sodium bicarbonate as predominantly fungistatic (inhibiting growth), rather than establishing a consistent fungicidal effect. Read the 2025 research paper.
Does that mean bicarbonate kills Candida?
It can cause Candida cell death under some laboratory conditions, as reported in 2014; other studies mainly show growth suppression. The observed effect depends on the organism, concentration, exposure time and experimental environment. It would therefore be misleading to claim that sodium bicarbonate universally kills Candida or cures candidiasis in patients.
Results may also differ in other experimental settings: a 2017 laboratory study reported germ-tube formation in 67% of the tested C. albicans isolates when exposed to 20 mM sodium bicarbonate in Tris-maleate buffer. This reinforces the importance of concentration and test conditions rather than assuming a universal antifungal effect. PubMed PMID 28656137.
Importantly, laboratory concentrations are not treatment instructions and should not be used to infer a safe sodium bicarbonate concentration for colonic irrigation, douching, or self-treatment.
What about sodium bicarbonate colonic irrigation?
The experimental evidence offers a scientific reason for interest in the biological effects of sodium bicarbonate. It does not, however, show that sodium bicarbonate colonic irrigation eradicates Candida from the human intestine or treats a diagnosed fungal infection. Clinical trials demonstrating such an outcome have not been identified, and recognised Candida infections should be diagnosed and treated using appropriate medical care.
Colon cleansing also carries risks, including dehydration, electrolyte disturbances, irritation and, rarely, serious complications, and may be unsuitable for people with certain bowel, kidney or heart conditions. The US National Institutes of Health discusses the limited clinical evidence and potential risks.
Parkland Natural Health offers a consultation-led, closed-system bowel-wellbeing service, including a sodium bicarbonate option, following individual suitability screening. It is a separate service from medical diagnosis or antifungal treatment. If you suspect candidiasis, obtain appropriate healthcare advice rather than using bowel irrigation in place of indicated treatment.
Bowel-wellbeing appointments at Parkland Natural Health, Holborn
Interested in bicarbonate as part of a therapist-led bowel-wellbeing appointment? At Parkland Natural Health in Holborn, Central London, our Sodium Bicarbonate Colonic Irrigation combines a closed-system, gravity-fed procedure with a bicarbonate solution, subject to a personal consultation and suitability screening. Some clients select this option because of their interest in Candida laboratory research or because they prefer an enhanced colonic experience.
Visitors who prefer a short course can also explore the two packages below. Their names describe existing Parkland catalogue options and should not be interpreted as evidence that a course treats or cures Candida infection. Consultation and suitability screening are required before treatment.
Three-session bicarbonate package: our currently listed “Anti-candida Mini Detox” product is a course of three colonic appointments using bicarbonate. “Anti-candida” is the existing catalogue name, not a clinically established medical indication.
Sodium Bicarbonate Mini Detox – 3 Colonic Irrigations
Sodium Bicarbonate Mini Detox is a structured course of three sodium bicarbonate colonic irrigation sessions in Holborn, Central London. It combines closed-system colon hydrotherapy with a carefully prepared sodium bicarbonate solution.
The course is popular with clients interested in bowel regularity, incomplete emptying and the scientific research into sodium bicarbonate’s antifungal activity, including laboratory studies involving Candida. Consultation and suitability screening are included. Book the course online and save 16%.
Mini Detox PLUS: a separate three-appointment bowel-wellbeing package. Herbal or probiotic implants have not been demonstrated to cure candidiasis.
Mini Detox PLUS – 3 Colonics with Herbal & Probiotic Implants
Mini Detox PLUS is a structured three-session colonic irrigation course in Holborn, Central London. Each appointment uses closed-system, gravity-fed colon hydrotherapy with sodium bicarbonate, while the programme adds a different specialist component at each visit: an anti-parasite herbal implant, a liver and gallbladder herbal implant, and a high-strength probiotic implant.
Personal consultation and suitability screening are included. We usually arrange the three appointments over about one week, subject to suitability and availability. Book online and save 16%.
New to the service? Review suitability and contraindications or contact the clinic before choosing an appointment. If screening identifies a contraindication, Parkland does not proceed with treatment and provides a full refund.
When to seek medical advice
- Contact your GP or a sexual health clinic if genital thrush symptoms are new, persistent, recurrent or difficult to distinguish from another infection.
- Seek medical advice if you are pregnant, breastfeeding, immunocompromised or have diabetes and suspect candidiasis.
- Get prompt medical assessment for painful or difficult swallowing, especially if you have oral thrush or reduced immunity.
- Seek urgent care if you are seriously unwell with fever or chills, particularly after recent hospital treatment or with an intravenous catheter.
A pharmacist can advise on suitable over-the-counter options for an infection you have previously been diagnosed with, but repeated self-treatment without review is not advisable.
Frequently asked questions about Candida yeast
Is Candida albicans the same thing as yeast?
Candida albicans is a species of yeast. The term “yeast” covers many fungal species, so not every yeast is Candida albicans.
Does everyone with Candida have an infection?
No. Candida may be present normally without causing symptoms. Infection depends on clinical findings, not presence alone.
Can Candida cause a bloodstream infection?
Yes, but invasive candidiasis is mainly a concern for people who are seriously ill or have specific risk factors. Ordinary thrush is not equivalent to a bloodstream infection.
Do pseudohyphae mean Candida is dangerous?
Not on their own. Pseudohyphae describe a growth form seen on microscopy. Their medical meaning depends on the site, symptoms and other findings.
Does sodium bicarbonate kill Candida albicans?
Laboratory studies show sodium bicarbonate can inhibit Candida growth; a 2014 experiment also reported necrosis in Candida cells exposed to inhibitory concentrations. Other studies describe mainly fungistatic effects. None of these results proves that bicarbonate colonic irrigation treats Candida infection in humans.
Will colon cleansing remove Candida from my body?
There is no convincing clinical evidence that it will. Colon hydrotherapy is not a recognised treatment for candidiasis, and doctors should assess and treat symptomatic infection medically.
Medical sources and further reading
- NHS – Thrush in men and women
- NHS – Oral thrush
- CDC – Candidiasis basics
- CDC – Risk factors for candidiasis
- CDC – Testing and diagnosis for candidiasis
- CDC – Treatment of candidiasis
- British Society for Immunology – Candida albicans
- Mayo Clinic – Candida cleanse diet: what does it treat?
- NCCIH – Detoxes and cleanses: evidence and risks
- Parkland – suitability and contraindications for colonic irrigation
- Letscher-Bru et al. (2013) – Antifungal activity of sodium bicarbonate (PubMed PMID 22991095)
- Lastauskienė et al. (2014) – Candida cell necrosis at inhibitory bicarbonate concentrations (PubMed PMID 24752490)
- de Sousa et al. (2009) – Reduced Candida adhesion to acrylic resin (PubMed PMID 20027444)
- Tomás et al. (2021) – Experimental sodium bicarbonate gels and Candida (PubMed PMID 33122009)
- Faria-Gonçalves et al. (2025) – Fungistatic activity, hyphae and biofilms (Heliyon)
- Matare et al. (2017) – Germ-tube induction under distinct bicarbonate laboratory conditions (PubMed PMID 28656137)
Reviewed for scientific references: 26 October 2026. This article provides general educational information and is not an individual diagnosis. Seek advice from an appropriately qualified healthcare professional about symptoms, suspected infections or treatment.
