Noticing a change in vaginal odour, even a subtle one, with no change in your hygiene routine, is one of the more private worries women carry through perimenopause. It is genuinely common, has a clear hormonal explanation in many cases, and is worth understanding rather than simply worrying over in silence.
Why Odour Can Change
The vagina has its own natural, healthy microbiome, largely made up of protective bacteria called lactobacilli, which keep the environment acidic and balanced. This balance is maintained partly by oestrogen. As oestrogen declines in perimenopause:
The protective bacteria reduce. Lower oestrogen means less glycogen in the vaginal tissue, which the protective lactobacilli feed on. With less of their food source, these beneficial bacteria can reduce in number.
Vaginal pH rises. As the protective bacteria decrease, the vagina’s natural acidity falls, and the environment becomes less acidic (higher pH). This shift makes the vagina more hospitable to other, less desirable bacteria, and can produce a noticeable change in odour, sometimes described as slightly different, or stronger, than before.
The tissue itself changes. The general thinning and drying of vaginal tissue in perimenopause, part of what is called Genitourinary Syndrome of Menopause (GSM), affects the vaginal environment overall and can contribute to a change in how it smells.
Discharge can change too. As tissue and pH shift, discharge may become thinner, different in colour, or simply less than before, which also affects odour.
Is It Hormonal, or an Infection?
This is the important distinction, because the causes and treatments differ. A subtle, mild change in odour, without other symptoms, alongside other perimenopause signs like dryness, is more likely to be the hormonal shift described above.
However, a strong, distinctly unpleasant, or new and sudden odour, especially a fishy smell (which can suggest bacterial vaginosis) or a smell alongside thick, unusual discharge, itching, burning, or irritation (which can suggest a yeast infection or other cause), points more toward an infection that needs its own specific treatment. Both bacterial vaginosis and yeast infections can actually become more likely as the vaginal environment shifts with falling oestrogen, so it is entirely possible for the hormonal changes described above to also make infections more common, not just to change odour directly.
Because these overlap, a change in odour, especially if it is new, strong, or accompanied by other symptoms, is genuinely worth a doctor’s assessment rather than guessing.
What Helps
Wash gently, with water only. Avoid soap, body wash, scented wipes, or any fragranced product inside or around the vagina. These strip the natural, already-shifting balance further and often worsen odour and irritation rather than helping. Rinse the external area with water only.
Avoid douching entirely. Douching disrupts the natural vaginal environment and increases the risk of infection and odour problems. It is not recommended at any age, and especially not now.
Wear breathable cotton underwear. This reduces moisture build-up and supports a healthier environment, and helps prevent the overgrowth of unwanted bacteria.
Address the underlying dryness. Because odour changes often travel with the broader picture of GSM, treating vaginal dryness, with regular vaginal moisturisers and, if needed, local vaginal oestrogen, can improve the tissue and its environment overall, easing odour along with dryness and discomfort. Local oestrogen requires a prescription, so ask your gynaecologist specifically.
Do not use internal “feminine hygiene” products. Vaginal deodorants, sprays, or scented internal products are unnecessary and often irritating or harmful to the natural balance. A healthy vagina cleans itself.
When to See a Doctor
Routine appointment if you have noticed a persistent change in odour and want reassurance, guidance, or treatment for the underlying dryness, particularly if it comes with other perimenopause symptoms.
Promptly if the odour is strong, fishy, or distinctly unpleasant, or comes with unusual discharge, itching, burning, pain, or irritation, as these suggest an infection that needs specific testing and treatment. Also see a doctor for any bleeding after sex, unusual bleeding, or symptoms that do not improve with gentle care.
A change in vaginal odour in perimenopause is common, has a clear hormonal explanation, and is nothing to feel ashamed of. Gentle care, avoiding anything that disrupts the natural balance further, and treating the underlying dryness usually helps, and a doctor can quickly tell the difference between the hormonal shift and something that needs its own treatment.
The Second Spring is an information resource, not a medical provider. For personal advice, speak with your doctor or gynaecologist. Write to us at thesecondspringofficial@gmail.com
