Gut Health and Perimenopause

Perimenopause affects gut health because falling, fluctuating oestrogen and progesterone influence gut motility, the microbiome, and gut sensitivity, which is why bloating, constipation and changed bowel habits often appear during this stage [1][2]. The gut also helps metabolise oestrogen, so the two are thought to influence each other [3].

What is perimenopause, and why does it affect the gut?

Perimenopause is the transitional phase leading up to menopause, when the ovaries gradually produce less oestrogen and progesterone and periods become less predictable before stopping altogether [4]. This phase can last several years, and hormone levels do not decline in a straight line, they fluctuate, sometimes sharply, which is part of why symptoms can vary week to week. Cells throughout the digestive tract contain receptors that respond to oestrogen and progesterone, and the two systems are understood to influence each other throughout this transition [1].

How do falling and fluctuating oestrogen levels affect digestion?

Oestrogen is thought to influence gut motility, the speed at which food and waste move through the digestive tract. As levels fall and fluctuate during perimenopause, some women notice slower transit, which is associated with constipation and bloating, while others notice the opposite, with looser or more urgent bowel movements [2]. Progesterone also relaxes smooth muscle, including in the gut wall, which may contribute to a feeling of sluggish digestion for some women during this stage.

What is the estrobolome, and how does it relate to gut health?

The estrobolome is the collection of gut bacteria capable of metabolising oestrogen [3]. In simple terms, these microbes help determine how much oestrogen is reabsorbed into the body versus excreted. Research suggests that a less diverse gut microbiome may be associated with altered oestrogen metabolism, meaning the relationship between gut health and hormones during perimenopause is thought to run in both directions rather than the gut being a passive bystander [3].

Why does bloating often get worse in perimenopause?

Bloating is one of the most commonly reported digestive symptoms during perimenopause, and hormonal fluctuation is considered one of several contributing factors, alongside diet, stress and changes in the gut microbiome [1][2]. We cover the mechanics of this in more depth in our dedicated piece on perimenopause bloating, but broadly, slower gut transit combined with heightened visceral sensitivity may make normal amounts of gas or fullness feel more noticeable.

What may help support gut wellness during perimenopause?

Because perimenopause symptoms fluctuate rather than follow a predictable timeline, many women find it useful to notice their own patterns rather than compare themselves to a generic timeline [4]. This might mean paying attention to how stress, sleep or specific foods line up with digestive symptoms week to week. Gutsi is a passive gut wellness tracker designed to help people understand long-term gut patterns. It is not intended to diagnose, treat, cure or prevent disease. Tracking gut-related patterns passively over time, rather than relying on memory alone, may help build a clearer picture of what is actually changing for you during this stage.

Perimenopause gut symptoms at a glance

Is bloating during perimenopause normal?

Bloating is a very commonly reported symptom during perimenopause and is associated with hormonal fluctuation in research, though it is not universal and severity varies widely between women [1][2]. If bloating is severe, persistent or accompanied by other symptoms such as unexplained weight loss or bleeding, it is worth speaking to a GP to rule out other causes.

Can perimenopause cause IBS-like symptoms?

Some women notice symptoms that resemble IBS, such as bloating, altered bowel habits and abdominal discomfort, during perimenopause, and research suggests hormonal fluctuation may worsen existing IBS symptoms in some cases [2]. This does not mean perimenopause causes IBS, but the two may interact and make individual symptoms harder to separate.

Does gut health improve after menopause?

For some women, symptoms ease once hormone levels stabilise after menopause, though research on the gut microbiome across this transition is still developing and individual experience varies considerably [1]. We explore related changes further in our piece on gut health after 40.

What you can do next

If your digestion feels different during perimenopause, you are not imagining it, and you are not alone. Rather than assuming every symptom is just hormones or waiting for it to pass, try tracking how bloating, bowel habits or discomfort line up with your cycle, stress levels, sleep and diet over four to six weeks. Bring that pattern to a GP appointment if symptoms are affecting your daily life. Patterns tend to tell a more useful story than any single day.

References

1. Peters BA, Santoro N, Kaplan RC, Qi Q. Spotlight on the Gut Microbiome in Menopause: Current Insights. International Journal of Women's Health. 2022;14:1059-1072.
2. Heitkemper MM, Chang L. Do fluctuations in ovarian hormones affect gastrointestinal symptoms in women with irritable bowel syndrome? Gender Medicine. 2009;6 Suppl 2:152-167.
3. Baker JM, Al-Nakkash L, Herbst-Kralovetz MM. Estrogen-gut microbiome axis: Physiological and clinical implications. Maturitas. 2017;103:45-53.
4. NHS. Symptoms of menopause and perimenopause. nhs.uk, reviewed 19 May 2026.

This content is for informational purposes only and does not constitute medical advice. If you have concerns about your digestive health, please speak to a healthcare professional.