How to Stop Perimenopause Diarrhea
Because apparently, the hot flashes and sleepless nights weren’t enough.
This month, we’re diving into the glamorous world of menopause and diarrhea. If you’ve found yourself sprinting to the bathroom more often lately and wondering if this is just another unexpected plot twist in the menopause saga, this post is for you.
Pull up a throne, queen (preferably not the porcelain one), and let’s unpack it.
Today, we’re exploring why diarrhea might feel more frequent or more dramatic in menopause, what the research says, and what you can actually do if your bowels seem to have entered their chaotic era.
If we haven’t met yet, hi! I’m Melinda Staehling, an Oregon-based Certified Nutrition Specialist and Menopause Society Certified Practitioner in private practice. Digestive concerns are among the most common reasons my clients visit me.
Let’s dive into the possible “Why” behind the sudden rise in this annoying occurrence, and then look at what you can do about it, whether that’s at home or with some professional guidance.
I’ll say it again throughout the post, but if you have bowel changes that have lasted for more than a few weeks, it’s time to get in to see a Doctor. If you have an accompanying fever, it’s time for urgent/emergency care.
While I recommend specific products in this post, Melinda Staehling Nutrition does not have an affiliate partnership with any supplement company.
Can Menopause Cause Diarrhea?
TL;DR:
We do not have convincing research (yet) to confirm that the menopause transition itself—meaning declining ovarian function, and the hormonal shifts of perimenopause—directly causes diarrhea.
However, so far in our collective timeline, menopause and perimenopause have gotten the short end of the research funding stick. So let’s stay tuned for more in this space.
That said, the experience of diarrhea in perimenopause and menopause can absolutely feel worse. And here are some possible reasons why:
1. Hormonal Shifts (aka The Hormone Roller Coaster)
Perimenopause can bring delightful symptoms like brain fog, hot flashes, rage-crying at commercials, and yes, digestive drama.
In early perimenopause, many people actually get shorter cycles that are closer together, not longer ones.
Meaning:
If you’re a card-carrying member of the Period Poops Club (welcome, we have matching jackets), and your cycle has tightened from 28 days to something ridiculous, like my recent 12-day cycle, you may be doubling the frequency of prostaglandin-driven diarrhea.
READ MORE: Need a refresher on the Stages of Menopause? CLICK HERE.
What are prostaglandins?
Prostaglandins are hormone-like chemical messengers released during inflammatory and pain processes–just like the menstrual cycle.
Prostaglandins tell the uterus to contract (thanks?), but they also tell the intestines to move faster (double thanks?!), which can result in loose stools.
So if your cycle is happening more often, guess what else is happening more often.
2. Stress, Depression, & Anxiety
We don’t talk about this enough: menopause can be an emotional adventure.
Research (and our personal experience) has linked hormonal fluctuations to increased stress reactivity, mood shifts, sleep changes, and anxiety.
And guess what your gut absolutely loves?
Stress.
It loves stress so much that it starts moving everything through your intestines at breakneck speed, like it’s out for a personal record.
Stress-induced diarrhea is a real, physiologically recognized thing. In perimenopause, where stress can simmer right under the surface, even small triggers can set off GI symptoms.
3. Hot Flashes & Diarrhea
Hot flashes can make you feel overwhelmed, and like your body has turned into its own broken thermostat.
What I didn’tfind was evidence that a hot flash directly causes diarrhea.
But consider this:
A hot flash is a sympathetic nervous system surge originating in the brain and creating sensations throughout the entire body.
So while it may not be a direct cause → effect...
It’s very plausible that hot flashes + stress + GI sensitivity = chaos.
4. Aging & Lifestyle Changes
As we move into midlife, other players enter the scene:
Changes in physical activity
More sedentary work patterns
Shifts in dietary habits - more take-out and fewer home-cooked meals
Medications
More alcohol
Sleep changes
Altered gut microbiome composition
All of these can influence bowel movements. So while menopause hormones may not be solely responsible, they’re definitely cooperating with other co-conspirators.
Other Possible Causes of Diarrhea in Midlife
Before we totally blame hormones, let’s look at what else could be going on.
IBS (Irritable Bowel Syndrome) & Perimenopause Diarrhea
A survey of 564 users of an online menopause platform found:
94% reporting GI symptoms
33% had an IBS diagnosis
Common symptoms reported included constipation, reflux, and stomach pain. Diarrhea wasn’t a top mention, but that doesn’t mean it isn’t happening.
IBS can be:
💩 IBS-C (constipation)
💩 IBS-D (diarrhea)
💩 IBS-M (mixed)
READ MORE: IBS with both diarrhea and constipation? Check out this post, What Works for Perimenopause Bloating & Constipation?
IBS is a diagnosis of exclusion, meaning that we need to rule out some other options first with testing. More on that below.
So, if diarrhea + pain + bloating is happening on repeat, it’s worth scheduling an appointment with your PCP or GI.
Food Intolerances & Perimenopause Diarrhea
New food intolerances can absolutely appear around menopause.
Possibilities include:
Lactose intolerance
Non-celiac gluten sensitivity
FODMAP intolerance (common in IBS)
Fructose malabsorption
These can all present with diarrhea as a symptom. Each of the situations above has its own unique presentation for testing protocol and potential treatment.
NOTE on low-FODMAP:
Low FODMAP diets can help with IBS, but staying on them long-term can create issues. This is not an easy plan, with so many foods on the “No” list. Many sources of fiber, which we know are beneficial, are also taken off the plate. I always recommend working with a trained clinician (like me) when undertaking a low-FODMAP diet.
Food Poisoning & Perimenopause Diarrhea
This is a surprisingly common trigger for both acute and sometimes chronic diarrhea.
If your symptoms started after an acute GI illness, think: chills, aches, nausea, vomiting—and then never fully resolved, you may be dealing with post-infectious IBS.
Keep a note of food poisoning events and add them to your “mention to the doctor and dietitian/nutritionist” list.
How to Stop Menopause-Related Diarrhea: Treatment Options
Here are some options evidence supports (or at least strongly suggests):
Treatment Options
Reminder here. I’m a nutritionist, but I’m not your nutritionist. And the following is for education only. Always check with your healthcare team, including your pharmacist, before adding anything to your plan.
1. OTC Meds (short-term only) for Perimenopause Diarrhea
Loperamide (Imodium): slows intestinal motility.
Bismuth subsalicylate (Pepto-Bismol): Good for nausea, cramping, and mild infection-type symptoms.
While these medications are generally considered safe, using them long-term can have consequences and should be under the care of a physician.
2. Supplements for Perimenopause Diarrhea
Evidence-supported options include:
Psyllium husk
Yep, my fave for constipation also works for diarrhea. Fiber normalizes stool bulk in both scenarios. Psyllium husk is high in soluble fiber, which pulls water into the colon and, with its gel-like properties, adds bulk to the stool and makes it easy to pass.
For brands, you can go with classic Metamucil (orange flavored, regular, and sugar-free), or, if you prefer unflavored, I like the texture of Yerba Prima. I say start slower than the recommended dose at 2 tsp/day and gradually work your way up to a couple of tablespoons, if tolerated.
Partially Hydrolyzed Guar Gum (PHGG)
This is another gentle, well-tolerated supplement that supports gut motility & microbiome. It also contains a higher amount of soluble fiber.
PHGG is made in the United States under the brand Sunfiber.
Saccharomyces Boulardii
This is close to a probiotic, really, a probiotic yeast, that is shown to help with diarrhea from various causes, including food poisoning.
You’re specifically looking for the brand Florastor here, as the research is behind a strain-specific probiotic, Saccharomyces Boulardii CNCM I-745®.
Zinc
Zinc is particularly helpful in infectious diarrhea and can help repair the lining of the digestive tract. It can also reduce the frequency and severity of diarrhea.
Dose zinc at 20mg/day for 1-2 weeks.
Saying it again! Check with your healthcare team first before starting new supplements or medications.
3. Hydration + Electrolytes
I know, I know, you’re tired of hearing it.
But diarrhea = fluid and electrolyte loss.
You don’t need to chug 3 Liquid IVs like you’re training for a salt-retention marathon.
But you do need:
Sodium
Potassium
Magnesium
You can get these from electrolyte drinks or foods like broth, bananas, sweet potatoes, yogurt, and salted rice dishes. Coconut water, too!
4. A Soothing Meal Plan
When you’re in the thick of an episode of diarrhea, there is no need to go full BRAT (just bananas, rice, applesauce, toast), but lower-fiber, gentler meals help, such as:
🥣 rice
🥣 eggs
🥣yogurt (if tolerated)
🥣 skinless chicken
🥣 potatoes without skin
🥣 low-fiber soups
🥣 sourdough toast
For the time being, avoid:
🍟 higher fat foods
🍟 very high fiber foods
🍟 alcohol
🍟 spicy foods
🍟 large amounts of caffeine
5. Mind–Body Support
Supporting your gut-brain axis can make a huge difference:
Gentle yoga
Walking
Paced breathing or box breathing
Mindfulness, like a body scan
Talk therapy for stress and anxiety
Gut-directed hypnotherapy (real research exists on this modality). You can look at the Nerva app or Happy Inside to see what this is about.
Meal behavior (chewing food more thoroughly, trying box breathing before/after meals).
Prevention Strategies for Menopausal Diarrhea
Once things calm down, here’s how to support more stable digestion:
1. Identify personal trigger foods.
Not through restrictive diets and food journals, just some simple notes when something really stands out.
2. Increase fiber slowly over time.
Fiber bulks stool and supports regularity. Increase slowly is the name of this game; otherwise, you’re whipping up a recipe for constipation - no thanks!
3. Maintain daily hydration: enough water to have pale urine when you go to the bathroom (think lemonade, not dark in color like apple juice). You don’t need to track every sip or ounce of water.
4. Consume regular meals and snacks.
Skipping meals is the gut’s least favorite party trick.
When to Call in the Professionals
If diarrhea isn’t improving after 2–3 weeks, it’s time for a medical assessment.
While your licensed dietitian and/or nutritionist can support you (I’d love to help), in order to guide sound, evidence-based treatment, we need to confirm a diagnosis.
For example, the treatment and reasoning behind a lifelong gluten-free diet for celiac disease is different from trialing a short-term trial off gluten for IBS.
When it’s time to get testing, I recommend starting with Primary Care and getting a referral to Gastroenterology.
Your clinicians may rule out:
IBD (Crohn’s, Ulcerative Colitis)
Celiac disease
Gallbladder issues
Thyroid dysfunction
Infections
Malabsorption disorders
IBS (once other causes are excluded)
Possible tests may include:
bloodwork
stool studies
hydrogen breath testing
colonoscopy
Wrapping It Up
Here’s your perimenopause diarrhea roadmap:
Consider the likely causes.
Hormones, stress, IBS, intolerances, infectionsTry out the common treatment options.
Fiber, hydration, gentle meals, supplements, OTCsIf it doesn’t improve → bring in the medical team.
Your PCP, GI, and yes—your friendly licensed nutritionist for long-term support
Menopause is already a wild ride, and diarrhea doesn’t need to be calling shotgun in the car.
You’re not alone; this is common (but not normal) and with the right steps, you can absolutely get things under control.
If you would like more support and a personalized plan to put into action, please reach out for an Introductory call. I’m here to help. Book your Introductory Call, here.
I’m in- network with insurance, which may cover the cost of our visits. See more about the plans I accept on this page.