Candidiasis and diet: what to eat and what the evidence says

What is vulvovaginal candidiasis, and why does it occur?

Vulvovaginal candidiasis is inflammation of the lining of the vulva and vagina. It is almost always caused by an overgrowth of Candida albicans. It is very common, according to the US Centers for Disease Control and Prevention (CDC) [1]. Around 75% of women have at least one episode in their lifetime, and 40% to 45% have two or more [1]. See “Recurrent cystitis”.

It almost always arises from an imbalance in the body’s own flora, rather than being caught from someone else. Common triggers include recent antibiotics, which reduce protective vaginal lactobacilli, and hormonal changes during pregnancy. Poorly controlled diabetes and periods when the immune system is weakened can also play a role. In a healthy person, the infection remains on the surface of the mucous membrane and does not spread to other organs.

Does an “anti-Candida diet” work?

No. The so-called “anti-Candida diet” circulates online. It involves cutting out fruit, dairy, fermented foods, gluten-containing grains and yeast to “starve” the fungus. There is no scientific evidence to support it, and no major clinical guideline recommends it.

The Infectious Diseases Society of America (IDSA) guideline is clear [2]. First-line treatment is an antifungal medicine, as a cream, pessary or oral medication, prescribed by a healthcare professional [2]. No eating plan can replace that medicine or clear an active infection. Cutting out whole groups of healthy foods makes your diet less varied and can increase fear around food, without treating the infection.

What is the link between sugar and candidiasis?

Yeasts of the Candida genus use simple sugars as an energy source. This is why poorly controlled diabetes is one of the situations that can make candidiasis harder to treat, a form known as complicated candidiasis [1]. It does not follow that dietary sugar causes the infection in someone without diabetes. No studies have shown this.

There is no need to ban carbohydrates either. Limiting free sugars (table sugar, soft drinks, juice, pastries and ultra-processed foods) makes sense as general health advice, and should be understood in that context. Pulses, oats, brown rice and boiled potatoes can still be part of your meals when you have candidiasis.

How to build a plate without fearing fruit

Food does not treat an active infection, and no specific food has been shown to prevent recurrences. A varied eating pattern can support your general health and help you stop feeling that you have to monitor every bite.

A simple way to plan lunch and dinner is to divide the plate into sections. Fill half with vegetables of any colour. Use a quarter for pulses, whole grains or potatoes. The remaining quarter can be fish, eggs, chicken or tofu. Cook and dress food with extra-virgin olive oil, and drink water.

Whole fruit can be eaten every day. It retains its fibre, which slows the absorption of its sugars, so it is a better choice than juice. Plain, unsweetened yoghurt or kefir can be served for breakfast or dessert. You do not need to make any special changes during an episode. Eat as you normally would and follow your prescribed treatment.

Do probiotics help with candidiasis?

Probiotics, taken by mouth or used vaginally, have become popular as an add-on. The idea is that some strains of lactobacilli may help restore vaginal acidity and the protective barrier after treatment.

The results should be interpreted cautiously. A review of ten trials in non-pregnant women found that, when added to antifungal treatment, probiotics may improve short-term outcomes and reduce recurrence after one month [3]. This effect does not last in the longer term, and the certainty of the evidence is low or very low [3]. The CDC concludes that there is not enough evidence to use probiotics as treatment [1]. Eating yoghurt or kefir as part of your usual diet is safe, but does not replace antifungal medicine.

What about home remedies and supplements?

Advice shared on social media includes inserting garlic, tea tree essential oil or yoghurt into the vagina, or taking capsules made from plant extracts. These practices can irritate the mucous membrane, cause contact dermatitis and disrupt protective flora, making symptoms worse.

The CDC notes that there is no strong evidence in favour of homeopathic products for vulvovaginal candidiasis [1]. By contrast, antifungal doses and safety have been well studied [2]. Before taking a supplement or herbal product, make sure it has been recommended by your doctor or dietitian-nutritionist.

What mistakes do we see in appointments?

Cutting out fruit and dairy “just in case”. This is often the first thing people remove after reading about the anti-Candida diet. A few weeks later, their diet is less varied and food anxiety is higher, while the candidiasis is unchanged.

Treating yourself whenever you feel itchy. Some people repeat the same over-the-counter pessary every few weeks without having had candidiasis confirmed. Itching and discharge can also be caused by other infections, which antifungal medicine will not treat.

Spending money on probiotics and forgetting everyday habits. Patients often tell us they have tried several bottles. The evidence for probiotics is weak [3]. Habits that reduce heat and moisture around the intimate area have modest supporting evidence, cost little and carry no risks.