Bloating & gut

Gut symptoms in perimenopause, menopause and postmenopause are common, often miss the hormone link, and rarely fit neatly into a ten-minute appointment. Here's the connection, and what actually settles things down.

The gut isn't separate from the rest of the menopause story, it's wired into the same hormonal system.

Motility slows. Falling progesterone and estrogen slow the smooth muscle of the gut. Transit time lengthens, water is reabsorbed for longer, stools harden. Constipation that wasn't there before often arrives in late perimenopause.

Bloating without weight gain. Hormonal water retention + slower transit + shifts in the microbiome can leave the abdomen visibly distended by evening even when food intake hasn't changed. It can feel alarming. Most of the time it's hormonal, not pathological.

Reflux and heartburn often start now. The valve between stomach and esophagus relaxes more readily as estrogen drops. New nighttime reflux, throat-clearing or a bitter taste in the morning is a recognized midlife pattern, especially with weight gain or alcohol.

The microbiome shifts with hormones. Specific gut bacteria (the 'estrobolome') metabolize estrogen. As estrogen falls, microbial diversity changes, which affects bloating, mood, immunity and even bone density. The science is early but the link is real.

Pelvic floor changes affect bowel function too. It's not just bladder. A weakening pelvic floor can cause incomplete evacuation, sensation of needing the toilet without much result, and rectal pressure. Often missed because it overlaps with constipation.

New food intolerances are common. Lactose, gluten, FODMAPs and alcohol often become harder to tolerate in midlife, even with no formal allergy. The threshold for symptoms drops. You're not making it up.

Visceral hypersensitivity, things that didn't hurt before now do. Estrogen helps dampen pain signals from the gut. As it drops, the same amount of gas, stretch or normal digestion can register as cramping, sharp pain or 'something is wrong'. Nothing is structurally wrong and you haven't become weak, your nervous system has turned the volume up on signals it used to filter out. This is one of the best-studied mechanisms behind midlife IBS-pattern symptoms, and it's also what makes gut-directed hypnotherapy and low-dose nerve-modulating medications work when fibre and diet alone don't.

Most gut symptoms respond to layered, simple interventions. Stack a few for two weeks and reassess.

Fibre, properly, and water with it. 30g of mixed soluble + insoluble fibre a day from vegetables, legumes, whole grains and ground flaxseed. Add it gradually (over 2 weeks) and double your water at the same time, or you'll feel worse before better.

Eat earlier, finish at least 3 hours before bed. Late eating worsens bloating, reflux and morning sluggishness. Bringing dinner earlier is often the single highest-impact change for nighttime gut symptoms.

Daily walk, especially after meals. Walking after meals improves transit measurably. 15 minutes after dinner is enough to make a noticeable difference within a week.

Try a low-FODMAP elimination if bloating is severe. A structured low-FODMAP trial (ideally with a dietitian) improves symptoms for roughly half to three-quarters of people with irritable bowel syndrome (IBS) in trials — a real effect, but not universal. It's not a long-term diet, it's a diagnostic, and the reintroduction phase matters as much as the elimination.

Talk to a pelvic floor physiotherapist. Underused for bowel symptoms. Specialists can assess straining patterns, retrain the pelvic floor and help with incomplete evacuation. Often life-changing for people who've been told 'just eat more fibre'.

Reduce alcohol, at least temporarily. Alcohol worsens reflux, bloating, motility and sleep. A two-week pause makes the role obvious. You can put it back; you'll just know what it costs.

Magnesium citrate at night. Magnesium citrate is gentle, well-studied, and helps both constipation and sleep. Stop using stimulant laxatives (senna, bisacodyl) chronically, they make the gut lazier over time.

Use a toilet footstool (Squatty Potty or any 7 to 9 inch stool). Sitting upright kinks the rectum via the puborectalis muscle; lifting your knees above your hips straightens it out. The result is less straining, faster and more complete emptying, and far less load on the pelvic floor, which matters in perimenopause when prolapse risk, hemorrhoids and stress incontinence all climb. Especially useful if estrogen-related slow-transit constipation, IBS flares or post-hysterectomy bowel changes have arrived. The branded Squatty Potty is the original; any sturdy 7 to 9 inch step stool does the same job for under $25.

Food-sensitivity (IgG) panels, useful as a clue, not a diagnosis. If your ND has run a LifeLabs IgG/IgG4 food panel, here's how to use it well. Every major allergy body (CSACI 2024, AAAAI, EAACI, ASCIA) says these panels are not validated as a diagnostic test for food allergy or intolerance, a positive IgG to a food often just means you eat it regularly, not that it's harming you. Where they can earn their keep is as a shortlist for a structured elimination-and-reintroduction trial: pull the top 3 to 5 flagged foods for 3 to 4 weeks, then reintroduce them one at a time over 3 days each while tracking symptoms. The reintroduction is the actual diagnostic, that's where you learn what's a real trigger for your gut versus a lab artefact. What's not safe or evidence-backed: a long, restrictive 'forever' avoidance list off a single panel with no reintroduction. If your ND's plan doesn't include reintroduction and a clear endpoint, ask for one before you commit.

Probiotics: be specific or skip them. Generic 'gut health' multi-strain blends underperform in trials, but specific strains have decent evidence for specific jobs and a 4-week trial is cheap data. For evening bloating and IBS-pattern discomfort: Bifidobacterium infantis 35624 (sold as Align). For mood + gut overlap (the 'psychobiotic' work): Lactobacillus helveticus R0052 + Bifidobacterium longum R0175 (sold as Cerebiome / Probio'Stick). For antibiotic recovery: Saccharomyces boulardii. Buy one, take it daily for 4 weeks, score your top symptom (1-10) before and after, if it hasn't moved, stop. Food-based fermenteds (yoghurt, kefir, sauerkraut, kimchi, miso) are still the best daily-habit option for most people, and stack fine with a targeted strain trial.

Gut-directed hypnotherapy. One of the strongest evidence bases in IBS, gut-directed hypnotherapy (a structured 6 to 12 week protocol, not stage hypnosis) reduces pain, bloating and bowel symptoms in roughly 70 to 80% of people who complete it, with effects holding at 1+ year follow-up. It works by retraining the gut-brain signalling that's behind visceral hypersensitivity. App-based programs like Nerva (Monash University-developed) deliver the standard protocol for a fraction of the cost of in-person sessions, and are a reasonable first try if low-FODMAP and the basics haven't settled things. Worth knowing about before you try a third probiotic.