Tania Lewis, Naturopath, Rutherglen VIC
Tania Lewis is a naturopath based in Rutherglen, Victoria, with fifteen years of clinical experience as a Registered Nurse. She works with women in perimenopause and post-menopause whose digestion has changed: bloating, reflux, unpredictable bowel habits, and food sensitivities that weren’t there before. She works within a food-first framework that takes gut, immune, and metabolic function as a connected system. She sees clients in Rutherglen and Yarrawonga, and consults online with clients across Australia.

Fresh gut-supportive whole foods including fermented vegetables, leafy greens, fennel, apple, and herbs on cream linen

When your digestion stops behaving

You used to eat what you liked. Now the same meals leave you bloated by mid-afternoon, and your bowels have their own opinion about the day. Foods you’ve eaten for decades suddenly disagree with you. Reflux turns up after dinner for no clear reason.

You’ve probably been told it’s stress, or age, or just something to live with. Maybe your bloods came back normal. But it doesn’t feel normal, and it doesn’t feel like the gut you used to have.

Digestive change is one of the most common things you’ll experience through the menopause transition, and one of the least explained. There’s a reason it arrives when your hormones shift, and once you understand the mechanism, it stops feeling random.

This page is for you if

You’re in perimenopause or post-menopause and your digestion has changed

You’re bloated most days, often worse as the day goes on

Your bowel habits have shifted: constipation, looser stools, or both in turn

Reflux or indigestion has appeared or worsened since your hormones changed

Foods you tolerated for years now cause symptoms

You’ve been told your results are normal, but your gut clearly isn’t

You’ve tried cutting foods out and it hasn’t given lasting relief

You suspect your digestion, hormones, and energy are connected, but no one’s joined them up

You want a thorough clinical assessment, not a generic protocol

What’s actually happening in your body

Your gut and your hormones are in constant conversation. When oestrogen falls through perimenopause and menopause, that conversation changes, and your digestion changes with it. The symptoms you’re noticing aren’t separate problems. They share a common driver.

Three things shift at once: the balance of bacteria in your gut, the integrity of your gut lining, and the speed at which food moves through you. Here’s how each one works.

Oestrogen and the gut microbiome

Oestrogen and your gut bacteria regulate each other. A specific community of gut microbes, known as the oestrobolome, produces an enzyme called beta-glucuronidase that reactivates oestrogen so your body can use it, rather than clearing it out. When oestrogen falls and the microbiome loses diversity, this two-way system falters, and both your hormones and your digestion feel it.

The research here is clear. A large study of more than 2,300 adults found that post-menopausal women had lower gut microbiome diversity and reduced microbial beta-glucuronidase than pre-menopausal women, shifting the gut ecology toward a pattern linked with higher cardiometabolic risk (Peters et al., 2022). In other words, the menopause transition measurably changes which bacteria live in your gut, and what they do.

Lower diversity matters because a varied microbiome is a resilient one. When diversity drops, you have fewer of the bacteria that produce short-chain fatty acids, the compounds that feed your gut lining and keep inflammation in check.

The gut lining and inflammation

Your gut lining is a single cell thick, held together by tight junctions that decide what gets absorbed and what stays out. Oestrogen helps maintain those junctions. As oestrogen declines, the lining can become more permeable, letting through particles that trigger low-grade inflammation.

This is part of why food sensitivities often appear in midlife. It isn’t that the foods changed. It’s that your gut barrier is responding differently, and your immune system is more reactive to what crosses it.

That same low-grade inflammation feeds back into your whole system. It’s one of the reasons gut symptoms so often travel with fatigue, joint aches, and mood changes at this stage. They’re branches of the same root.

Motility, bile, and digestive capacity

Oestrogen and progesterone both influence how quickly your gut moves. As they fall, motility can slow, which is why constipation and bloating become more common after menopause. Slower transit also gives gas-producing bacteria more time to ferment your food, which adds to the bloating.

Stomach acid and digestive enzyme output tend to decline with age as well. Lower stomach acid means protein and minerals are harder to break down, and it changes the environment further along the gut. This is often behind the reflux you’d least expect, because reflux is frequently a problem of too little acid and poor motility, not too much.

Bile flow matters too. Bile emulsifies fat and keeps the small intestine’s bacterial balance in check. When bile flow is sluggish, fat digestion suffers and bacteria can overgrow where they shouldn’t, which shows up as bloating, discomfort, and irregular stools.

Why the symptoms cluster

Put these together and the pattern makes sense. Falling oestrogen reshapes your microbiome, loosens your gut lining, slows your motility, and reduces your digestive capacity, all at once. That’s why gut symptoms in menopause rarely arrive alone, and why treating one symptom in isolation tends to disappoint. The system needs addressing as a system.

Why “normal” results don’t always mean normal

Standard testing is built to catch disease. A colonoscopy rules out serious pathology. Coeliac screening checks for one specific condition. These are important, and if they’re clear, that’s genuinely good news.

But “no disease found” isn’t the same as “functioning well.”

The gap between ‘not diseased’ and ‘functioning well’ is where many women in perimenopause and beyond find themselves.

Your microbiome balance, your digestive capacity, and your gut lining integrity don’t show up on a standard blood panel.

This is where functional testing helps. Functional blood chemistry interpretation reads your existing pathology against optimal ranges, not just disease thresholds, and can flag patterns in inflammation, iron, and nutrient status that a standard read would pass over.

A clipboard, pen, stethoscope, and a small jar of fermented vegetables with dried herbs on a wooden desk

Two plain amber dropper bottles beside a bowl of berries on a wooden surface

How I work with this presentation

I’m a naturopath with a clinical background in acute nursing, which means I take a full history and think in systems rather than isolated symptoms. For a gut presentation in perimenopause or menopause, the assessment covers:

Your full digestive history and symptom timeline, mapped against your hormonal changes

A review of existing pathology, including inflammatory markers, iron studies, and liver function

Dietary intake, fibre diversity, and how you’re eating, not just what

Bowel habits, bloating patterns, reflux, and food reactions in detail

Stress load and the gut-brain connection via the HPA axis

Medication and supplement history, including HRT and anything affecting stomach acid

Where it’s clinically useful, I use Microba microbiome analysis to see what’s actually growing in your gut, so the plan targets your ecology rather than guessing at it. My approach is food-first and works within the G.E.M.M. Protocol, addressing the gut, hormonal, and metabolic drivers together.

I work alongside your GP and other treating practitioners, not in opposition to them. If something in your assessment warrants referral or further investigation, I’ll say so.

What clients commonly notice

In my clinical experience, bloating and bowel regularity are often the first things to settle, usually within the first few weeks, once we address diet diversity, digestive capacity, and the most reactive foods. That early relief tends to be what people notice most.

The deeper work of rebuilding microbial diversity and gut lining integrity takes longer. Most clients begin to notice meaningful shifts within four to twelve weeks, with continued change beyond that as the gut ecology re-establishes. Energy, skin, and mood often improve alongside digestion, because they were never separate from it.

I don’t promise specific outcomes. What I offer is a clear picture of what’s driving your symptoms and a structured plan to address it.

Consultations and pricing

Initial Clinical Assessment — $220 (60-75 minutes)

A thorough assessment of your digestive history, hormones, and metabolism, after which you’ll receive a written treatment plan.

Follow-up Consultation — $150 (30-45 minutes)

A structured review of your progress, with refinement of your plan as your gut responds.

Clarity Call — complimentary (10 minutes)

A short phone call to see whether we’re a good fit. No clinical advice is given on this call.

Frequently asked questions

Can a naturopath help with digestive problems after menopause?

In my clinical experience working with post-menopausal women, gut symptoms in midlife respond well when the hormonal and microbial drivers are addressed together rather than one at a time. Menopause is associated with a measurable shift in the gut microbiome, including lower diversity and altered function (Peters et al., 2022). That means there’s a real, biological reason your digestion has changed, and a real target to work with. My role is to identify what’s driving your particular presentation and build a food-first plan around it, working alongside your GP.

Peters, B. A., Lin, J., Qi, Q., Usyk, M., Isasi, C. R., Mossavar-Rahmani, Y., Derby, C. A., Santoro, N., Perreira, K. M., Daviglus, M. L., Kominiarek, M. A., Cai, J., Knight, R., Burk, R. D., & Kaplan, R. C. (2022). Menopause is associated with an altered gut microbiome and estrobolome, with implications for adverse cardiometabolic risk in the Hispanic Community Health Study/Study of Latinos. mSystems, 7(3), e0027322. https://doi.org/10.1128/msystems.00273-22

My bowel tests came back normal, but I still feel bloated and off. What does that mean?

It means serious disease has been ruled out, which is worth knowing, but it doesn’t explain your day-to-day symptoms. Standard tests are designed to catch pathology, not to measure how well your gut is functioning. Your microbiome balance, digestive capacity, and gut lining integrity sit outside what a colonoscopy or standard blood panel assesses. Functional testing and a detailed history fill that gap by looking at how your gut is working, not just whether it’s diseased.

Why has my gut changed so much since menopause?

Falling oestrogen is the common thread. Oestrogen and the gut microbiome regulate each other through the oestrobolome and the enzyme beta-glucuronidase, and declining oestrogen is linked with reduced microbial diversity and disrupted gut function (Baker et al., 2017). At the same time, lower oestrogen affects your gut lining and slows motility. So the bloating, the changed bowel habits, and the new food sensitivities aren’t separate problems. They’re downstream of the same hormonal shift.

Baker, J. M., Al-Nakkash, L., & Herbst-Kralovetz, M. M. (2017). Estrogen-gut microbiome axis: Physiological and clinical implications. Maturitas, 103, 45-53. https://doi.org/10.1016/j.maturitas.2017.06.025

Do I need to stop my current medications or HRT to work with you?

No. I don’t ask you to stop prescribed medication or HRT to work with me. Both are part of your clinical picture, and I factor them into your assessment and plan. If anything I find suggests a conversation with your prescriber, I’ll tell you, and I work alongside your GP rather than around them.

What’s the difference between seeing a naturopath and seeing my GP for my gut?

Your GP investigates and rules out disease, which is essential and something I rely on. My focus is different. I look at how your gut is functioning within the context of your hormones, diet, and metabolism, and I have longer to do it. The Initial Clinical Assessment runs 60 to 75 minutes, which gives room to map your symptoms against your whole system and leave you with a written plan. The two roles complement each other.

How long before I notice a difference?

Bloating and bowel regularity often improve within the first few weeks once diet and digestive capacity are addressed. Rebuilding microbial diversity and gut lining integrity takes longer, and most clients notice meaningful shifts within four to twelve weeks. Your timeline depends on how long the picture has been developing and what’s driving it, which is part of what the assessment clarifies.

Have more questions about how naturopathic care works or what to expect from a consultation? Visit the FAQ page. For the gut-thyroid connection, see Thyroid health in perimenopause and menopause, for the gut-skin connection, see Skin changes in perimenopause and menopause, and for the related symptoms of fatigue and sleep see Fatigue, weight gain and low energy in perimenopause and menopause, and Sleep disruption in perimenopause and menopause.

You can find me in person, and online across Australia

In person —
Rutherglen, VIC

74 Main Street,
Rutherglen VIC
Wednesday, Thursday

In person — Yarrawonga, VIC

31-33 Belmore Street, Yarrawonga VIC
Friday

Telehealth

Available to clients anywhere in Australia.
All consultation types are available via telehealth during the Rutherglen hours.

All appointments are booked online. Full prepayment is required.
A 48-hour cancellation and rescheduling policy applies.

Ready to take a proper look?

Digestive change through menopause has clear drivers, and they’re addressable. The Initial Clinical Assessment gives you a thorough look at what’s happening across your gut, hormones, and metabolism, and a written plan to work from.

If you’re not sure whether this is the right fit, the Clarity Call is a good place to start. It’s ten minutes by phone, no obligation.

Book an Initial Clinical Assessment

Book a Clarity Call

This page is general information, not personal medical advice. It doesn’t replace individual assessment or care from your GP or treating practitioners. Book a consultation for advice specific to your situation.

Gut health in perimenopause and menopause