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Thirai Sorgam > Reproductive Health > Poor hygiene, unprotected sex and more can cause vaginal infections: Know 10 culprits
Reproductive Health

Poor hygiene, unprotected sex and more can cause vaginal infections: Know 10 culprits

March 28, 2025 9 Min Read
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Poor hygiene, unprotected sex and more can cause vaginal infections: Know 10 culprits
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If you are frequently experiencing discomfort, you should understand these 10 common causes of vaginal infections and how to prevent them.

Have you ever experienced discomfort or irritation there, but have you wondered what is causing it? Vaginal infections are more common than most people achieve and can affect women of all ages. From itching and burning sensations to abnormal discharge, vaginal infections can disrupt your intimate health and make you uneasy. You may also notice redness and swelling around the vagina and vulva, burning sensations when urinating, and discomfort during gender. Although they are often treatable, it is important to understand the underlying causes of vaginal infections that make you more vulnerable.

Symptoms of vaginal infection

Here are some common symptoms of vaginal infections you should know:

  • Itching and burning sensations in the vagina and vulva (often bad at night)
  • Vaginal pain and discomfort
  • Thick white vaginal discharge
  • Changes in color or odor of vaginal discharge
  • Redness and swelling of the vagina and vulva
  • A burning sensation when urinating
  • Discomfort during sex
  • Pelvic pain
  • Chills and fever
  • Mild vaginal bleeding or spots

If you experience any of these symptoms and do not improve or worsen within a few days, it is important to consult a healthcare professional about appropriate diagnosis and treatment.

10 Common Causes of Vaginal Infection

Here are some of the most common causes of vaginal infections you should know:

1. Bad hygiene

Maintaining proper hygiene is essential for vaginal health. “Wearing sweaty or dirty underwear, rare cleanings, or harsh soap use, cleaning, or products containing chemicals can make women more susceptible to infection and destroy the natural balance of women,” suggests obstetrician Dr. Kaisleen Khan. Bad hygiene is one of the most common causes of vaginal infections, but it is also important to avoid overwashing as this can lead to irritation and imbalances.

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Tightening of the vagina
Poor hygiene can lead to vaginal infections. Image provided by Adobe Stock

2. Excessive moisture

Warm, moist environments promote the growth of bacteria and fungi, leading to infections such as yeast infections and bacterial vaginosis. Excessive water is one of the causes of vaginal infections. Prolonged exposure to tight-fitting clothing, synthetic underwear, and damp conditions (such as wet swimsuits and sweaty gym clothes) can also cause infection. To prevent excess moisture buildup, dry the area and change it to fresh, breathable clothing.

3. Overwashing or excessive cleaning

Poor hygiene can cause infections, but according to the Mayonnaise Clinic, excessive or frequent cleaning with strong antibacterial soap or frequent dutch can remove healthy bacteria. “This can disrupt the vaginal flora, one of the key causes of vaginal infections,” says Dr. Khan. The vagina is self-cleaning, and over-cleaning can remove essential protective bacteria. Wash gently in lukewarm water is all your vagina needs.

4. Unprotected sex

Unprotected gender increases the risk of sexually transmitted diseases (STIs). This is an important cause of vaginal infection. It can cause symptoms such as irritation, abnormal discharge, and pain. Some infections such as herpes and HPV can be transmitted without visible symptoms. Therefore, it is important to practice safe sex by using condoms to limit the number of sexual partners.

5. Say no to strict chemical products

Unfortunately, a wide range of intimate cleanings, scented soaps, sprays, and Dutch are packed with chemicals that destroy the natural pH balance of the intimate area and lead to infections. The vagina is sensitive and requires a product that is mild and free of artificial fragrances or harsh chemicals.

6. Weak immune system

Underlying health conditions such as stress, poor diet and autoimmune diseases can undermine the body’s ability to combat infections. The weak immune system makes it difficult to dodge harmful bacteria and fungi, leading to vaginal infections.

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7. Sharing personal hygiene products

Using someone else’s towel, razor, or underwear will help migrate bacteria and fungi, increasing the risk of infection such as yeast infections and urinary tract infections (UTIs). This is one of the causes of vaginal infections. Always use our own hygiene products to maintain your health and prevent infection.

8. Uncontrolled blood sugar levels

“Diabetic or insulin-resistant women are at a higher risk of vaginal infections due to their higher levels of glucose in urine and secretion, which provide a food source for the bacteria,” explains Dr. Khan. Maintaining blood glucose levels within a healthy range helps minimize the risk of infection, and regular monitoring and management of diabetes helps maintain overall health.

Blood sugar levels
High blood sugar levels increase the risk of infection. Image provided by: Freepik

9. Swimming pool and hot tub exposure

Chlorine and other chemicals used in pools and hot tubs can destroy the natural pH balance of the vaginal flora and lead to infections. Long-term exposure to chlorinated water is one of the causes of vaginal infections. It can dry out the vaginal area and is susceptible to irritation and infections. After a swim, wash thoroughly and avoid long-term stays in the pool or hot tub to protect vaginal health.

10. Hormonal imbalance

“Changes in hormones during pregnancy, menstruation, or menopause can cause vaginal infections due to fluctuations in estrogen levels,” says Dr. Khan. These hormonal shifts can change the vaginal environment, making it more likely to cause more yeast infections and bacterial imbalances. Take care of your hormone health through proper nutrition, hydration, and regular testing.

Now you know the cause of a vaginal infection, so let’s understand how to prevent it.

How to prevent vaginal infection?

Below are some tips to help prevent vaginal infections and reduce intimate health.

  • Clean intimate areas with water and avoid the use of harsh soaps and chemicals that can disrupt your natural balance.
  • The area is delicate and sensitive so do not scrub too hard.
  • Always wipe back and forth to avoid the movement of bacteria from the anus to the vagina.
  • Do not use chemical products such as scented soaps or sprays as they can irritate the skin.
  • Wear cotton underwear. This helps the area breathe and prevents water buildup.
  • Loose clothing also helps air circulation and reduces the risk of infection.
  • Always replace it from wet clothes or sweaty gym wear to prevent bacteria and yeast growth.
  • Use condoms to reduce the risk of STIs and bacterial infections.
  • Stick to physician-recommended products with balanced pH levels for the best care.
  • It limits the use of panty liners as it can trap moisture.
  • Shaving or waxing should be done with caution to avoid microtea. These are because they can make the area more vulnerable to infections.
  • Use clean tools and avoid frequent hair removal to reduce irritation.
  • Finally, eat a nutritious diet, stay hydrated properly, and exercise regularly to support your immune system and vaginal health.
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Understanding the common causes of vaginal infections and taking precautions can reduce the risk of infection.

Related FAQs

Can stress and diet affect vaginal health?

Yes, stress and poor diet can weaken your immune system and make you more susceptible to infections. A balanced diet and stress management are key to maintaining vaginal health.

Can vaginal infections affect fertility?

In most cases, vaginal infections are treatable and do not affect fertility. However, it is important to seek treatment as untreated infections can lead to complications that can affect reproductive health.

Is vaginal infection contagious?

Most vaginal infections, such as bacterial vaginitis and yeast infections, are not contagious. However, sexual activities can increase the risk of acquiring or spreading them to your partner.

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