Perimenopause, Oestrogen and Bowel Changes: What You Need to Know
Perimenopause can bring a surprising number of changes to the body, and digestion is one area that is often overlooked. Alongside more familiar symptoms such as hot flushes, sleep disturbance and changes in periods, some women notice constipation, bloating, wind or changes in their usual bowel pattern.
Although digestive symptoms can have many causes, fluctuating hormones during perimenopause may play a role.
Why can perimenopause affect digestion?
Oestrogen has effects throughout the body, including the gastrointestinal tract. Hormonal changes may influence gut movement, sensitivity and the way the gut microbiome functions.
During perimenopause, oestrogen levels do not simply decline steadily. They can fluctuate considerably before eventually becoming lower after menopause. These changes may contribute to differences in how the digestive system behaves.
Some women find that their bowel becomes slower, making constipation more likely. Others experience increased bloating, abdominal discomfort or changes in stool consistency.
The relationship between menopause and gut health is still being researched, so it is important not to assume that every digestive symptom is caused by low oestrogen. Diet, stress, sleep, medications, physical activity and conditions such as IBS can all contribute.
Constipation during perimenopause
Constipation can become more troublesome during midlife. You may notice that you are going to the toilet less often, passing harder stools or needing to strain.
If this is happening, it can be helpful to look at your overall dietary pattern rather than simply increasing fibre dramatically. Fibre, fluids and regular movement all support normal bowel function, but the right amount of fibre varies between individuals.
For women who experience bloating or IBS alongside constipation, increasing fibre too quickly can sometimes make symptoms worse. A gradual, personalised approach is often more appropriate.
What about bloating and IBS?
Bloating is another common digestive complaint during the menopause transition. Women with IBS may also notice that their symptoms change as their hormones fluctuate.
Research suggests there may be a relationship between reproductive hormones and gastrointestinal symptoms in women with IBS, although the reasons are not yet fully understood.
Rather than automatically removing foods from your diet, it can be useful to look for patterns between food, bowel symptoms, stress, sleep and hormonal changes. This can provide a clearer picture of what may be contributing to your symptoms.
Supporting your gut through perimenopause
There are several practical ways to support healthy digestion during midlife:
Include a variety of fibre-rich foods such as vegetables, fruit, wholegrains, nuts, seeds and pulses, according to your tolerance.
Drink enough fluid throughout the day.
Keep physically active, as movement can help support bowel motility.
Try to maintain regular meals and a consistent toilet routine.
If you experience bloating or IBS symptoms, consider keeping a short-term food and symptom diary.
Avoid unnecessary elimination diets, particularly if they significantly reduce the variety of foods you eat.
It is also worth considering the bigger picture. Poor sleep, stress and changes in activity levels can all affect digestion and may become more noticeable during perimenopause.
When should bowel changes be investigated?
While hormonal changes may contribute to digestive symptoms, new bowel symptoms should not automatically be put down to perimenopause.
Speak to your GP if you are concerned about your bowel habits, or if you develop a persistent change in bowel habit, blood in your stool, unexplained weight loss, ongoing abdominal pain or symptoms that are new, severe or concerning.
Nutrition and gut health in midlife
Perimenopause is a time when many aspects of health and wellbeing can change at once. Looking after your digestive health does not necessarily mean following a restrictive diet or removing large numbers of foods.
A balanced, varied diet alongside adequate fibre, fluids and regular movement can provide a good foundation. If constipation, bloating or IBS symptoms are affecting your quality of life, personalised dietary support can help identify appropriate strategies while protecting nutritional adequacy.
References
Shaw N, Abbott R, Pettinger C. The volume and characteristics of research on gastrointestinal symptoms in 'natural' peri- and postmenopause: A scoping review. Women's Health. 2025.
Ley D, Saha S. Menopause and gastrointestinal health and disease. Nature Reviews Gastroenterology & Hepatology. 2025;22:556–569.
Heitkemper MM, Chang L. Do fluctuations in ovarian hormones affect gastrointestinal symptoms in women with irritable bowel syndrome? Gender Medicine. 2009.
Lurati AR. Effects of Menopause on Appetite and the Gastrointestinal System. Nursing for Women's Health. 2018;22(6):499–505.