Recurrent BV for years? The gut and sugar connection

Author: Aunt Vadge
Qualified Naturopath | BHSc(N)

Last reviewed: July 4, 2026

Hi Aunt Vadge,

After my first period (age 12), I started getting episodes where my vagina smelt strongly of fish — others in the room could smell it — after eating something sweet, but it passed quickly. Over the years, bacterial vaginosis symptoms have become more and more common.

Now I have a permanent odd smell with yellow discharge, and the fish smell comes very easily — sometimes after sweets, sometimes hours after sex, sometimes just when it’s hot. I’ve tried Fluomizin and lots of oral probiotics, and this past week I inserted two oral probiotic capsules vaginally (Physioflor, L. crispatus).

I think it got worse after stress and constipation last August. I suspect my bowels or a food intolerance are involved. I don’t know what to do.

Kind regards,
Fishy
Age 28, Spain

Hi Fishy,

You’ve lived with this a long time, and the pattern you’ve spotted — sweets and stress setting it off — is a real and important clue. It points to where the answer most likely lies: not just in your vagina, but in your gut and your blood sugar.

So the most useful approach is to treat the whole picture, rather than reach for another antimicrobial and hope. And you’re not imagining the sugar link: in one study, women with the highest-sugar, highest-glycaemic-load diets had three to four times the odds of BV, the likely reason being that swings in blood sugar and gut bacteria ripple through to the vaginal microbiome.

Your body has been telling you something true for years. Decades-long, sweets-and-stress-driven BV like yours is exactly the kind of case we love. And we’ve helped people whose BV goes back twenty years or more finally break the cycle — the ‘secret sauce’ is individual, but the direction is usually gut, blood sugar and rebuilding flora, not antimicrobials alone.

So I’d focus on a few things. Feed your gut with homemade milk kefir, a brilliant, cheap way to support your gut microbiome — look for fresh kefir grains, not dried or shop-bought, and start with a shot glass building up to a cup a day.

Steady your blood sugar by eating plenty of fresh, unprocessed food and leaning on low-GI foods, so you’re not riding the sugar spikes that seem to set you off. Consider intolerances, since your gut’s been off since last August, with a guided elimination diet ideally with a practitioner to pin down triggers.

An activated B-complex may help the BV picture along with the fatigue and anxiety that often ride alongside it. And track your vaginal pH between flares so you can see what’s actually shifting things.

The reason antimicrobials alone keep failing is that Fluomizin is a perfectly good antimicrobial but on its own it knocks bacteria down without rebuilding what should be there. Lasting results usually come from restoring your protective vaginal flora, so the disruptive bacteria have nowhere to settle back into.

Our free Killing BV guide walks you through the whole approach, and if you’re not turning a corner in six to eight weeks, that’s the moment to book an appointment so someone can work out what’s driving the recurrence, with a comprehensive vaginal microbiome test showing exactly what’s going on. You’ve already done the hard detective work by spotting the patterns; now it’s about acting on them, and this really is workable. Hang in there.

Best,
Aunt Vadge

This is general information based on current research and our clinical experience, not a substitute for personalised medical advice.