Could Your Gut Be Affecting Your Hormones? What Women Over 40 Need to Know
Oct 15, 2026What if some of the symptoms you've been blaming on your hormones aren't entirely about your hormones?
Maybe you're dealing with bloating, constipation, fatigue, brain fog, or changes in your weight. And because you're in your 40s or 50s, you've probably been told it's perimenopause, menopause, or your thyroid.
And yes, hormones can absolutely play a role in those symptoms.
But I think there's another piece we sometimes overlook.
Your gut.
Most people think about gut health in terms of digestion. Are you bloated? Are you constipated? Do certain foods make you gassy? Does your stomach hurt after eating?
Those things matter, but your digestive system is involved in much more than breaking down food.
It helps you absorb nutrients, interacts with your immune system, influences aspects of blood sugar regulation, and even participates in how your body processes estrogen.
And when we're talking about women going through perimenopause and menopause, those connections are worth understanding.
I've worked with women who are doing all the things they've been told to do for their thyroid or hormones, yet they're still struggling with constipation, bloating, fatigue, or feeling uncomfortable after meals.
That's when I want to know what else might be contributing.
Because sometimes we're so focused on one hormone or one lab result that we're missing another part of the picture.
Your Gut Is Doing a Whole Lot More Than Digesting Food
Your digestive tract is home to trillions of microorganisms, including bacteria, viruses, fungi, and other microbes.
Together, they make up what we call your gut microbiome.
And while social media tends to focus on bad bacteria, parasites, and everything that could supposedly be wrong with your gut, there's a much bigger conversation we should be having.
These microorganisms are involved in several important processes.
They help break down certain fibers we can't digest on our own. Some produce compounds called short-chain fatty acids, which help support the cells lining your colon and interact with your immune and metabolic systems.
Your microbiome is also constantly communicating with your immune system.
So when I say your gut doesn't work in isolation, that's what I mean.
It's connected to other systems in your body.
Now, I want to be clear about something.
Having occasional bloating doesn't automatically mean you have an unhealthy microbiome.
And feeling tired or foggy doesn't automatically mean something is wrong with your gut.
Those symptoms can have several different causes.
But if you're dealing with ongoing digestive issues, particularly alongside other symptoms, I don't want you brushing them off as something you just have to live with.
The Connection Between Gut Health and Estrogen
Here's something a lot of women don't realize.
Your gut bacteria actually participate in what happens to estrogen after your body has already used it.
We tend to think about estrogen as something produced by the ovaries that circulates through the body, does its job, and that's the end of the story.
But estrogen also needs to be metabolized and eventually eliminated.
Your liver plays a major role in processing estrogen. Some estrogen metabolites are released into your digestive tract through bile.
And this is where your gut bacteria come into the picture.
Certain bacteria produce enzymes, including one called beta-glucuronidase, that can influence whether some estrogen compounds are reabsorbed or eliminated through your stool.
There's even a name for the collection of gut microbes and microbial genes involved in estrogen metabolism.
It's called the estrobolome.
Now, before you decide that every hormone symptom you have must be coming from your gut, let's be careful.
This doesn't mean an imbalance in gut bacteria automatically causes high estrogen.
And it doesn't mean every woman experiencing breast tenderness, heavy periods, mood changes, or other perimenopausal symptoms has a gut problem.
During perimenopause, estrogen and progesterone can fluctuate quite dramatically from one month to the next. There are several things influencing how you feel.
But researchers are continuing to investigate the relationship between the gut microbiome and estrogen metabolism.
And I think that's an important reminder that we can't always look at hormones without considering what's happening elsewhere in the body.
Which brings me to something that sounds incredibly basic.
Your bowel movements.
Constipation Isn't Something You Should Just Ignore
If you're only having a bowel movement a couple of times a week, I don't want you assuming that's normal simply because it's been happening for years.
Now, you don't necessarily have to go every single day to have healthy bowel habits.
But if you're regularly straining, passing hard stools, feeling like you haven't completely emptied, or having fewer than three bowel movements a week, those can be signs of constipation.
And there are a lot of reasons women experience it.
Not enough fiber. Inadequate fluid intake. Certain medications. Changes in physical activity. Pelvic floor dysfunction. Digestive conditions.
And yes, your thyroid can be part of this conversation too.
When thyroid hormone levels are too low, intestinal motility can slow down.
Motility simply refers to how food and waste move through your digestive tract.
So if you have hypothyroidism and you're constantly constipated, those things may be connected.
But constipation can also contribute to bloating, abdominal discomfort, and that miserable feeling of being full even when you haven't eaten much.
And remember, bowel movements are one of the ways your body eliminates waste, including some hormone metabolites.
Does that mean going to the bathroom every day is going to magically balance your estrogen?
No.
But regular bowel function is something we want to support.
And if you're consistently constipated, we need to understand why rather than just recommending another supplement and hoping for the best.
What Does Your Gut Have to Do With Your Thyroid?
This is another connection I want women to understand.
Let's say you're taking thyroid medication. Your labs are looking pretty good, but you're still exhausted, foggy, or not feeling like yourself.
Does that automatically mean your thyroid medication isn't working?
Not necessarily.
And it doesn't automatically mean you need more thyroid hormone.
Sometimes we need to look at what else could be contributing.
One of those things is nutrient status.
Your digestive system is responsible for breaking down food and absorbing the nutrients your body needs.
Several nutrients are important for normal thyroid function, including iron, selenium, iodine, and zinc.
And nutrient deficiencies can contribute to symptoms that overlap with thyroid problems.
Iron deficiency, for example, can leave you feeling tired, weak, and unable to concentrate, whether you have hypothyroidism or not.
Certain digestive conditions can also interfere with nutrient absorption.
Celiac disease is one example, and it's especially relevant because it occurs more frequently in people with autoimmune thyroid disease.
So if someone has Hashimoto's, persistent digestive problems, and nutrient deficiencies, that's something I'd want them discussing with their healthcare provider.
Digestive conditions and certain medications can also affect thyroid medication absorption.
That's another reason we need to look beyond a single lab result.
Now, this doesn't mean you should run out and start taking iodine, selenium, or iron supplements.
Too much of certain nutrients can cause problems, and supplementation should be based on your actual needs.
And I also want to clear up something you may have heard online.
There are claims that a huge percentage of thyroid hormone conversion happens in the gut.
Your body converts T4 into the more active T3 through processes occurring in several tissues, including the liver and kidneys.
The microbiome may influence aspects of thyroid hormone metabolism, but we don't have strong evidence that fixing your gut bacteria will automatically correct thyroid hormone conversion.
I think those distinctions are important.
We want to understand the connections without turning every symptom into a gut problem.
Your Gut and Immune System Are Constantly Communicating
A substantial amount of immune activity takes place in and around your digestive tract.
And when you think about it, that makes sense.
Your gut is constantly exposed to food, beverages, and microorganisms from the outside world.
Your immune system has to recognize what's harmless, respond to genuine threats, and avoid overreacting to everything that passes through.
Your gut bacteria help communicate with your immune system, and the lining of your intestines helps regulate what passes into the rest of your body.
You've probably heard the term leaky gut.
The more precise term is increased intestinal permeability.
Changes in intestinal permeability can occur with certain diseases and inflammatory conditions.
But here's where I think we need to be careful.
Not every food sensitivity, autoimmune condition, skin problem, or hormone symptom is caused by leaky gut.
And there's no single gut-healing supplement or protocol that's been proven to fix all those problems.
What we do know is that your gut microbiome, intestinal barrier, and immune system interact with each other.
Supporting digestive health can be one piece of supporting your overall health.
But it isn't a replacement for investigating an actual medical condition.
Your Gut May Also Influence Blood Sugar and Metabolism
This is especially interesting for women in perimenopause and menopause.
As estrogen changes, several things can influence metabolic health, including sleep, physical activity, muscle mass, and changes in body composition.
But the gut microbiome is also involved in metabolic regulation.
Remember those short-chain fatty acids I mentioned earlier?
When certain gut bacteria ferment dietary fiber, they produce compounds that interact with pathways involved in metabolism, inflammation, and gut hormone signaling.
Your digestive tract also produces hormones involved in appetite and blood sugar regulation, including GLP-1.
And hormones such as ghrelin and leptin help regulate hunger and fullness through different systems in the body.
Now, does that mean your gut bacteria control every craving you have?
No.
And taking a probiotic isn't a proven way to fix insulin resistance.
But it helps explain why the quality and variety of the foods we eat matter.
This is also why I don't love telling women to eliminate all carbohydrates.
Because when you start removing beans, lentils, fruit, vegetables, and whole grains, you may also be eliminating some of the best sources of fiber for your gut microbiome.
And different types of fiber support different microbial processes.
Variety matters.
Before You Buy Another Gut Supplement, Look at Your Food
I know gut health can sound complicated.
There are probiotics, prebiotics, digestive enzymes, microbiome tests, gut cleanses, and all kinds of products promising to fix things you may not even know are wrong.
But before you spend another hundred dollars on supplements, I want you to take a look at what you're actually eating.
One of the simplest things you can work on is getting a greater variety of plant foods into your diet.
I'm not necessarily talking about eating more food.
I'm talking about eating different foods.
Maybe you eat broccoli almost every night.
That's great. Broccoli is nutritious.
But what if you had broccoli one night, asparagus another night, roasted carrots another night, and a salad with several different vegetables later in the week?
Maybe you always eat blueberries with breakfast.
Try raspberries or strawberries occasionally.
If almonds are your usual snack, rotate in walnuts or pumpkin seeds.
Add chia seeds to yogurt.
Try lentils in a soup.
You don't need to completely overhaul your diet.
You can start with a few small changes.
Different plant foods provide different fibers and plant compounds, and those can support different microorganisms in your digestive tract.
Research has found associations between greater plant-food variety and differences in gut microbiome diversity.
That doesn't mean you need to count every plant you eat or hit some magic number each week.
But it does give us another reason to stop eating the exact same handful of foods all the time.
And one important note here.
If you're dealing with IBS, significant bloating, or another digestive condition, suddenly increasing fiber can make symptoms worse.
So go slowly.
Add one new food, see how you tolerate it, and build from there.
I don't want you forcing yourself to eat something that's making you miserable just because someone told you it's good for your gut.
What About Prebiotics and Fermented Foods?
Prebiotics are substances, often certain fibers, that beneficial microorganisms can use.
You'll find different prebiotic fibers in foods like onions, garlic, asparagus, oats, beans, and slightly green bananas.
There's also something called resistant starch.
Some resistant starch occurs naturally in foods like beans and lentils, and some forms when foods such as potatoes or rice are cooked and then cooled.
So even leftover potatoes can have a slightly different starch composition than freshly cooked potatoes.
Does that mean you need to start calculating resistant starch?
Absolutely not.
I'm just showing you how ordinary foods can support your microbiome without making nutrition another full-time job.
Fermented foods can also be useful.
Yogurt with live cultures, kefir, sauerkraut, and kimchi are examples.
Some fermented foods contain live microorganisms, although not all of them do, and their effects vary.
If you enjoy them and tolerate them, they can be part of your diet.
If they make your digestive symptoms worse, don't force them.
There is no single food that everyone needs to eat for good gut health.
Do You Actually Need a Probiotic or Gut Test?
This is something I want you to think about before buying another product.
We tend to assume probiotics are automatically beneficial for everyone.
But different probiotic strains have different effects.
A strain that has evidence for one particular digestive problem may not help with another.
And a higher number of bacteria on the label doesn't necessarily make a product better.
The same goes for digestive enzymes.
There are situations where these products can be appropriate, but they're not something everyone needs.
And then we have microbiome testing.
There are all kinds of direct-to-consumer tests available that promise to tell you what's happening inside your gut.
Some can identify microorganisms present in a stool sample.
But the science hasn't reached a point where most commercial microbiome profiles can reliably tell us the cause of someone's symptoms or produce a proven, personalized supplement plan.
And I've seen how overwhelming those reports can become.
Someone gets a long list of bacteria, a bunch of food restrictions, and suddenly they're afraid to eat half the things in their kitchen.
That's not helping.
There are legitimate medical tests for digestive infections, inflammation, celiac disease, and certain malabsorption problems.
Those can be very valuable when symptoms warrant them.
But testing should have a purpose.
What are we looking for? Why are we looking for it? And how would the result change what we do?
Those are the questions I'd rather ask before ordering another test.
Stress, Sleep, and Movement Matter Too
I know. Everybody tells you to manage your stress.
But there's a reason this keeps coming up.
Your brain and digestive system communicate through what's called the gut-brain axis.
And that communication goes both ways.
Stress can affect how quickly food moves through your digestive tract, how sensitive your digestive system feels, and how you experience symptoms like bloating or abdominal discomfort.
If you've ever been really nervous and suddenly needed to run to the bathroom, you know exactly what I'm talking about.
Other people have the opposite experience.
When they're stressed, everything seems to slow down.
That doesn't mean your digestive symptoms are all in your head.
It means your nervous system is involved in digestive function.
Sleep matters too.
Poor sleep can affect appetite, blood sugar regulation, and your overall health.
And regular physical activity can help support bowel function and metabolic health.
So when I'm talking about gut health, I'm not just talking about what you're eating.
I'm also looking at what's happening in your everyday life.
Where I'd Start if You're Dealing With Gut and Hormone Symptoms
If you're reading this and recognizing some of your own symptoms, I don't want you leaving here thinking you need to do ten different things tomorrow.
Start by paying attention.
How often are you having a bowel movement? Are you frequently bloated? Do certain meals consistently make you uncomfortable?
Then look at your food.
Are you eating different sources of fiber throughout the week? Are you getting vegetables, berries, beans, nuts, seeds, or whole grains? Or have you eliminated most of those foods because you're worried about carbohydrates and weight gain?
And what about everything else?
Are you sleeping? Moving your body? Dealing with chronic stress?
Do you have thyroid symptoms or other health concerns that need to be evaluated?
Persistent constipation, ongoing diarrhea, unexplained weight loss, blood in your stool, or significant abdominal pain should be discussed with a healthcare professional.
And if you're dealing with fatigue, brain fog, or other symptoms that overlap with thyroid or menopausal changes, don't assume you already know the cause.
Sometimes we need to investigate further.
Your Gut May Be One Piece of the Puzzle
Here's what I really want you to understand.
Your gut does a lot more than digest food.
It plays a role in nutrient absorption, immune function, metabolic regulation, and processes involved in estrogen metabolism.
And as women move through perimenopause and menopause, it's worth understanding how those systems interact.
But I don't want you blaming every symptom on your microbiome either.
Sometimes it's your thyroid.
Sometimes it's changing estrogen levels.
Sometimes it's a nutrient deficiency, a digestive condition, or several things happening at once.
That's why I don't like looking at symptoms one at a time.
The body doesn't function that way.
And supporting your gut doesn't have to mean eliminating half your diet, buying expensive supplements, or following some complicated protocol.
Sometimes it starts with eating a greater variety of foods, getting enough fiber, addressing constipation, moving your body, and paying attention to patterns in your symptoms.
And if you're doing those things and still don't feel well, that's when it makes sense to look a little deeper.
Because being bloated, exhausted, and uncomfortable all the time shouldn't be something you automatically accept as part of getting older.
Ready to Look Beyond the Symptoms?
If you're dealing with gut problems alongside thyroid symptoms, hormone changes, fatigue, or weight concerns, it can be difficult to know where to start.
That's the kind of bigger-picture approach I take in my Total Health Reset.
Instead of focusing on one symptom or one hormone, we look at your health history, nutrition, digestion, blood sugar, thyroid function, lifestyle, and other factors that may be contributing to how you feel.
The goal is to understand what needs attention and create a plan that makes sense for you.
If you're tired of guessing what to eat, which supplements to take, or why you're still not feeling well, you can apply to work with me here.
We can start by looking at what's actually going on.