Gut health · Women's health
4 Exciting Discoveries From Microbiome Science
From ovarian health to menopause and stronger bones, new research is revealing just how interconnected our gut microbiome is with women's health.
When we think about gut health, digestion is usually the first thing that comes to mind. Bloating, bowel movements and digestive comfort often dominate the conversation.
But the trillions of microorganisms living within our gastrointestinal tract are involved in much more than digesting food.
They interact with our immune system, influence the production of biologically active metabolites and communicate with tissues throughout our bodies.
And some of the latest research is giving us even more reasons to appreciate this remarkable ecosystem.
I'm Dr Cecilia Kitic, founder of Fertile Gut, and I've spent more than 20 years researching the connections between nutrition, physiology and immune health.
Here are four fascinating developments in microbiome science, what they mean for women's health and, importantly, what you can do to nurture your gut every day.
01
Our understanding of beneficial gut bacteria is evolving
Meet Heyndrickxia coagulans, formerly known as Bacillus coagulans
Advances in genomic sequencing are changing how scientists classify and understand beneficial bacteria.
One example is Heyndrickxia coagulans MTCC 5856, the clinically studied probiotic strain found in our Fertile Gut Cacao Latte.
This remarkable bacterium forms protective spores that help it withstand heat, stomach acid and other challenging conditions. Research has also demonstrated antimicrobial activity against certain potentially harmful bacteria, highlighting its potential role in supporting the intestinal microbial ecosystem.
And here's something we're particularly excited about for women's health.
A registered clinical trial is currently investigating whether LactoSpore® (H. coagulans MTCC 5856) can improve symptoms experienced during perimenopause.
Researchers will examine changes in mood, sleep, energy, hot flushes, night sweats, cognition, libido, digestion, joint discomfort and overall wellbeing. They'll also investigate blood biomarkers to better understand the biological pathways that may contribute to these effects.
We're especially interested in the findings because our Cacao Latte already combines this probiotic with partially hydrolysed guar gum (PHGG), a prebiotic fibre with human clinical evidence supporting improvements in sleep quality through changes in the gut microbiome.
We're excited to see whether this particular probiotic can offer additional benefits for women navigating perimenopause.
What does this mean for you?
Not all probiotics are the same. Their effects depend on the specific strain and the clinical evidence supporting it.
Combining well-researched probiotic strains with prebiotic fibres is one way to nurture a healthy gut ecosystem, with emerging research continuing to explore benefits beyond digestion.
The research
Narsing Rao et al., 2023, International Journal of Systematic and Evolutionary Microbiology. PMID: 37462355
Ongoing clinical trial: ACTRN12626000404325 – LactoSpore® and perimenopausal symptoms.
02
Your gut and ovaries are in conversation
And scientists are discovering more about the messages they exchange.
Exciting new research is revealing how our gut microbes influence ovarian health. An October 2026 study identified a fascinating connection between a gut bacterium, a compound it produces called indole-3-acetamide (IAM), and ovarian function.
Researchers discovered that this microbial compound influences fat metabolism through pathways that can affect how the ovaries function.
This highlights an exciting connection between our gut microbiome, metabolism and reproductive health, reinforcing that our ovaries are part of a much larger, interconnected system.
What does this mean for you?
Nurturing your gut microbiome supports your broader metabolic health. Include diverse plant foods, prebiotic fibres and regular movement in your daily routine.
The research
Chen et al., 2026, Cell Host & Microbe. PMID: 42716026
03
Your intestinal barrier is constantly renewing itself
And prebiotic fibres help support this remarkable process.
Your intestinal lining is continually renewing itself, helping absorb nutrients while protecting your body from potentially harmful substances.
One of the most fascinating ways our microbiome supports this barrier is through the fermentation of prebiotic fibres. This produces beneficial compounds, including butyrate, which provides energy for intestinal cells and supports the processes involved in intestinal barrier maintenance and repair.
What has recent research discovered?
A 2026 clinical trial demonstrated that prebiotic supplementation increased beneficial Bifidobacterium, while accompanying laboratory research showed that metabolites produced during fibre fermentation helped protect intestinal barrier integrity.
This is particularly relevant for women approaching menopause. Another 2026 study involving 964 women identified changes in markers of intestinal barrier health beginning approximately two years before menopause.
Together, these findings reinforce the importance of supporting our intestinal environment throughout life.
What does this mean for you?
Nourishing your gut microbes helps support the health and renewal of your intestinal barrier.
While 25 g of fibre daily is the Australian recommended adequate intake for women, research suggests additional benefits may be achieved with higher intakes.
Aim for 30–40 g of dietary fibre daily (read our blog on fibremaxxing to start slowly) including a diversity of plant foods and prebiotic fibres that support beneficial microbial activity, and the production of short-chain fatty acids such as butyrate.
This is the science behind our Microbiome Essentials formulation, designed to nourish beneficial gut bacteria, and repair & restore the intestinal barrier.
The research
Kerezoudi et al., 2026, Microbiome Research Reports. PMID: 42272857
Shieh et al., 2026, Journal of Clinical Investigation. PMID: 42424108
04
Your gut and bones are connected
And human research is revealing why dietary fibre may matter
We know that calcium, vitamin D and resistance exercise are important for bone health.
But scientists are increasingly investigating another potential contributor: the gut microbiome.
Our gut microbes influence the intestinal environment, interact with immune pathways and produce metabolites that may be involved in bone remodelling.
This emerging relationship is known as the gut–bone axis.
What has recent research discovered?
A 2026 longitudinal study followed 223 Swedish women aged 50–60 during early postmenopause.
Over two years, researchers examined dietary intake, physical activity, circulating SCFAs and measures of bone health.
They found that higher dietary fibre intake was associated with better trabecular bone structure – the internal, sponge-like network of bone.
Certain circulating SCFAs were also positively associated with bone measurements.
This is an encouraging finding because it connects something we can influence through everyday nutrition – dietary fibre intake – with physiological markers relevant to skeletal health.
The study was observational, so it doesn't establish that increasing fibre prevents bone loss. Nevertheless, it adds valuable human evidence to the growing understanding of the gut–bone connection.
What does this mean for you?
Bone health deserves attention well before menopause.
Supporting a healthy gut microbiome can sit alongside established bone-health strategies as part of a broader approach to healthy ageing.
Practical ways to support your gut and bone health:
-
Include fibre-rich foods daily, particularly legumes, vegetables, fruit and wholegrains.
-
Prioritise adequate calcium through dairy foods, calcium-fortified alternatives or other calcium-rich foods.
-
Ensure sufficient vitamin D, with testing or supplementation when clinically indicated.
-
Include progressive resistance training and appropriate weight-bearing or impact exercise.
-
Eat sufficient protein to support muscle and skeletal health.
The research
Vilar Geraldi et al., 2026, Osteoporosis International. PMID: 41622331
The good news? You can nurture your microbiome every day
One of the most encouraging things about microbiome science is that our intestinal ecosystem responds to the environment we create for it.
We don't need to wait for the next scientific discovery to start supporting our gut.
And we don't need to overhaul everything overnight.
Five simple ways to nurture your gut this week
1
Add one more plant food to your day.
A handful of berries at breakfast, chickpeas with lunch or an extra vegetable at dinner all contribute to dietary diversity.
2
Think about fibre diversity, not just fibre quantity.
Different microorganisms utilise different substrates. Including a mixture of wholegrains, legumes, seeds, fruit and vegetables helps provide a broader range of fibres.
3
Make breakfast an opportunity to nourish your microbiome.
Try overnight oats with chia seeds and berries, wholegrain toast with avocado, or yoghurt with fruit and flaxseed.
4
Move your body regularly.
Walking, resistance training and other forms of physical activity support metabolic health, muscle function and overall wellbeing. Research also suggests that exercise interacts with the gut microbiome.
5
Focus on consistency rather than perfection.
Supporting your microbiome doesn't need to be complicated. It's about small, consistent habits that become part of your everyday life.
That's why we created Fertile Gut – to make science-backed gut nurturing simple, enjoyable and something you look forward to.
My favourite ritual? Ending the day with a warm Cacao Latte, nourishing my gut microbes while taking a moment to unwind.
Dr Cecilia Kitic, founder
A final thought: Your gut is about so much more than digestion
The more we discover about our gut microbiome, the more we appreciate how deeply connected it is to our health.
From our reproductive years through menopause and beyond, nurturing our gut microbiome is an investment in our long-term wellbeing.
Small, consistent choices to nourish your microbiome today can help build the foundations for better health tomorrow.
Ready to nurture your microbiome?
Explore Fertile Gut's science-backed formulations, thoughtfully developed to make daily gut nurturing a little easier.
Explore Fertile Gut
This article provides general educational information and is not a substitute for individual medical advice.
