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What Causes Thrush?

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Thrush is caused by a yeast overgrowth, but infection can be triggered by a number of different factors.

Get fast and convenient access to effective thrush treatments delivered to your door.

In most cases, vaginal thrush can be treated with antifungal medications. Some women may experience recurrent thrush, and other treatments may be necessary in these cases.

Find clinically proven solutions to treat thrush with hub.health.

Common causes for thrush

Vaginal thrush (also known as vulvovaginal candidiasis) is caused by an overgrowth of the Candida albicans yeast.

This yeast is usually present in the vagina in small amounts. When it multiplies, it can cause an imbalance in the vaginal microbiome – what we know as thrush.

Common causes of thrush include hormonal changes, taking certain antibiotics, and some health conditions, such as diabetes or a weakened immune system. 


Antibiotic use

Antibiotics are a common cause of vaginal thrush. As well as fighting infection, antibiotics kill both bad and good bacteria in the vaginal microbiome. This can lead to an overgrowth of yeast, which may cause symptoms of vaginal itching, burning and discharge. Antibiotics can also disrupt the natural balance of the vagina, which makes the area more susceptible to thrush.

If you are taking antibiotics and develop thrush, it is important to speak with your medical team about treatment options. In some cases, you may be able to take a course of antifungal medication at the same time as the antibiotics. Sometimes it may be necessary to stop taking antibiotics to clear up the thrush.


Diabetes is another common cause of vaginal thrush. This is due to the high blood sugar levels providing an ideal environment for yeast to grow. Women with diabetes are also more likely to have other health conditions that make them more susceptible to yeast infections, including obesity, high blood pressure, and high cholesterol.

Hormonal changes

Several different hormonal changes can cause vaginal thrush. The most common hormonal changes occur during pregnancy when increased levels of estrogen cause the body to produce more sugar, which may then feed the yeast that causes thrush. Other hormonal changes that cause thrush include taking the contraceptive pill, menopause, or hormone replacement therapy (HRT).

The immune system and stress

A weakened immune system is often caused by stress, so it’s not surprising that vaginal thrush is more common during periods of stress. When the body is under pressure, it produces more cortisol hormone. This can disrupt the normal balance of bacteria in the vagina and allow the yeast that causes thrush to flourish. If you’re experiencing vaginal thrush, it’s important to talk to your doctor about ways to reduce stress and strengthen your immune system.

It’s time to look after your health

By understanding the causes of thrush, it’s possible to make lifestyle changes and find effective treatment to reduce the likelihood of future infections. Seeking treatment is as easy as an online consultation with the hub.health medical team.

Thrush FAQs

What are the symptoms of thrush?

The most common vaginal thrush symptoms include:

  • Persistent discomfort, itchiness, or burning in the genital area
  • Tears in the skin surrounding the genitals
  • A thick, white, cottage-cheese like discharge
  • Swelling and/or redness around the vulva or vagina
  • Stinging or burning sensation when urinating or having sex
What causes thrush?

Thrush is caused by a yeast overgrowth that disrupts the vaginal microbiome. This can occur from increased stress levels, introducing new antibiotics to the body, hormonal changes during pregnancy or on your period, or another illness like diabetes.

What types of thrush do you treat?

The thrush treatment our medical team prescribe is specific to vaginal thrush.

What are the treatment options for vaginal thrush?

Vaginal thrush treatment options include 3 Day Cream, 6 Day Cream, 1 Tablet, or Combination. Your assigned clinician will ask which treatment option you prefer during your initial questionnaire

Can I speak with my assigned clinician at any time?

Of course! Our online platform enables ongoing support whenever you need it. To chat with your medical team, log into your profile, head to the ‘Products’ tab and select ‘Manage Treatment’. This is where you can message your clinician.

Our team is also available at [email protected] Drop us a line, anytime.


Learn more about what causes thrush and how to reduce future infections.

Understand the common causes of thrush and manage the condition with hub.health.

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Understanding more about the symptoms associated with vaginal thrush.

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