Vaginal pH balance is one of those topics that is surrounded by many myths — advertisements often offer special "cleansing" products for "cleansing," but according to gynecological science, it is excessive "cleansing" that can disrupt the natural balance that you are supposedly trying to maintain.
What is natural balance?
A healthy vagina is a self-regulating ecosystem dominated by a group of lactobacilli (mainly Lactobacillus crispatus and Lactobacillus iners), which produce lactic acid and maintain an acidic environment (pH 3.8-4.5). This acidic environment naturally inhibits the growth of pathogenic bacteria and fungi — it is the body's natural defense mechanism, not a problem that can be corrected by outside intervention.
What upsets the balance?
Douching. The practice of douching, popular in some cultures, is not recommended by most gynecologists — it washes away not only "unwanted" bacteria but also protective lactobacilli, increasing the risk of bacterial vaginosis and urinary tract infections. Recommendations from the World Health Organization (WHO) and the American College of Obstetricians and Gynecologists (ACOG) strongly advise against douching.
Scented soaps and hygiene sprays. The outer part of the genitals (vulva) is sufficient to be washed with warm water or a neutral, unscented soap — the inner part (vagina) does not need any additional "cleaning" at all, it cleans itself with natural discharge.
Antibiotics. Antibiotic treatment kills not only the target bacteria but also the protective lactobacilli, often leading to a temporary yeast infection after treatment ends — a known, documented side effect.
Hormonal changes. The menstrual cycle, pregnancy, menopause, and hormonal contraception affect estrogen levels, which, in turn, directly affect the lactobacilli population and pH.
Warning signs
Although natural discharge is normal and its amount/texture varies throughout the cycle, certain signs require a doctor's consultation:
- A strong, unpleasant odor (especially a "fishy" odor, which is often a sign of bacterial vaginosis)
- Sharp color change (greenish, gray)
- Itching, burning, or pain when urinating
- Unusual consistency (thick, "curd-like" discharge, often a sign of a yeast infection)
Balance-preserving habits
- Cotton underwear — naturally "breathes", reducing moisture accumulation, which creates a favorable environment for fungal flora.
- Wiping from front to back after using the toilet — reduces the risk of transferring intestinal bacteria (including E. coli) to the vagina.
- Avoid intimate products containing alcohol and perfume.
- Probiotics — Some studies suggest that dietary supplements containing lactobacilli may help restore balance after antibiotic treatment, although this does not replace consulting a doctor if symptoms persist.
The myth of the influence of food
There are often claims in popular culture that specific foods (pineapple, citrus fruits) significantly change the smell or taste of discharge — the scientific evidence for this is weak and mostly anecdotal. Hydration levels (drinking enough water), general hygiene, and hormonal status have much more of an impact than specific foods.
Male hygiene analogy
The male genitalia also has its own natural microflora, although with a less acidic environment. Daily washing with clean water, especially the foreskin area (to prevent dirt accumulation), is sufficient - using aggressive soaps here can also cause irritation.