18/03/2026
Most people don't realise your vaginal microbiome isn't static — it's constantly shifting in response to your hormones.
Here's what's actually happening at each stage:
🌱 Before puberty — oestrogen is low, so the environment is relatively unprotected. Higher pH, fewer good bacteria. Your body hasn't yet built its defences.
🌸 During your reproductive years — this is your microbiome in its prime. Oestrogen fuels the growth of Lactobacillus, which acidifies the vaginal environment and actively fights off infection. A low pH around 4 is your body doing its job beautifully.
🤰 In pregnancy — everything amplifies. Lactobacillus reaches its highest levels ever, pH drops even further, and the microbiome becomes remarkably stable. That stability isn't just protecting you — it's preparing a microbial gift for your baby at birth.
🍂 At menopause — as oestrogen drops, so does your natural protection. The pH climbs, good bacteria thin out, and many women start experiencing recurrent infections, dryness, and discomfort for the first time. This isn't inevitable — it's treatable.
Your hormones and your microbiome are in constant conversation. When one changes, so does the other. 🤍
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