Why Am I Feeling Bloated in Midlife?

Your waistband feels tighter by the evening, your abdomen feels full, and meals you once enjoyed comfortably now seem to leave you bloated. Sound familiar? Bloating is a common digestive concern, including during midlife. Understanding what is driving it can help you find appropriate ways to manage the symptoms.

Bloating is the feeling of fullness, pressure or swelling in your abdomen. Sometimes you can see visible expansion (known medically as abdominal distension), and sometimes it simply feels uncomfortable. While it can make your clothes feel tighter, bloating is different from gaining abdominal fat (National Institute of Diabetes and Digestive and Kidney Diseases [NIDDK], 2021a).

What might be behind it?

Changes around menopause

Some women notice more digestive symptoms during the menopause transition. A recent study found that bloating severity was associated with the menopause transition and feelings of tension, although this does not fully establish cause and effect. Hormonal influences remain a possible part of the picture, but researchers are still working out their contribution. Notice whether bloating occurs alongside changes in your menstrual cycle or other menopausal symptoms, without assuming hormones explain everything (Kamp et al., 2026).

Constipation

When stool moves slowly or the bowel doesn’t empty fully, bloating can follow. Even having a bowel movement every day doesn’t necessarily rule out constipation: straining, hard stools and feeling incompletely emptied are useful clues. Medically, constipation can involve fewer than three bowel movements weekly, but it can also involve hard or difficult-to-pass stools or incomplete emptying. Frequency needs to be considered alongside stool consistency, ease of evacuation and your usual bowel pattern (NIDDK, 2018a, 2018b). Dealing with the constipation here can help reduce the bloating.

Food and fermentation

Gut bacteria naturally produce gas as they break down carbohydrates that haven’t been fully digested. Foods such as onions, garlic, legumes and some fruits may cause symptoms in susceptible people. Lactose intolerance, certain sugar-free sweeteners and increasing fibre too quickly can also contribute. This doesn’t mean these foods are unhealthy; individual tolerance and portion size matter (NIDDK, 2021a, 2021b).

Small intestinal bacterial overgrowth (SIBO)

Sometimes, excessive numbers of bacteria in the small intestine contribute to bloating, gas, abdominal discomfort and diarrhoea. These bacteria ferment carbohydrates, producing gas. SIBO is more likely when conditions affect the normal movement of food through the small intestine, or after certain types of bowel surgery. However, these symptoms overlap with many other digestive problems, so bloating alone cannot diagnose SIBO. A clinician can assess whether investigation, such as hydrogen breath testing, is appropriate (Pimentel et al., 2020).

Antibiotic use

The colon hosts bacteria that help break down food. Antibiotics can reduce some helpful bacteria alongside those causing an infection, changing the abundance, composition and diversity of the gut microbiome. Recovery varies depending on the antibiotic and the individual, with some changes lasting for months. Antibiotics can be lifesaving when needed. Their timing is worth including in a digestive history, particularly if symptoms began during or shortly after treatment (Anthony et al., 2022; NIDDK, 2021a).

Stress and a sensitive gut

Your brain and digestive system constantly communicate. Stress can influence bowel function and how strongly you feel pressure or discomfort. People with irritable bowel syndrome may experience bloating even when the amount of gas in their gut is normal. Where stress contributes, addressing its sources and considering approaches such as gut-directed cognitive behavioural therapy or diaphragmatic breathing may help manage symptoms (Kamp et al., 2026; Moshiree et al., 2023; NIDDK, 2021a).

Everyday habits and medicines

Eating quickly, chewing gum and drinking fizzy drinks can increase swallowed air. Iron supplements and some medicines, including opioid pain medicines and certain antidepressants, can contribute indirectly by causing or worsening constipation (NIDDK, 2018b, 2021b).

Where do you start?

Look for patterns: when does the bloating begin, what are your bowel movements like, and does it relate to particular foods or stressful days? Eating slowly, moving regularly and addressing constipation are useful starting points. Avoid cutting out multiple food groups without guidance; finding your individual triggers is more useful than making your diet increasingly restrictive. A clinician experienced in digestive health, alongside a dietitian where dietary changes are needed, can help guide assessment and treatment (Moshiree et al., 2023; NIDDK, 2018b, 2021b).

Prebiotics and probiotics are not automatically the answer. Some fermentable fibres used as prebiotics can increase gas, while the American Gastroenterological Association advises against using probiotics specifically to treat abdominal bloating and distension (Moshiree et al., 2023). Supplements should therefore be considered according to the underlying problem rather than added routinely (NIDDK, 2021b). Again, an experienced practitioner can help assess your individual needs here.

When should you get it checked?

New, persistent or worsening bloating deserves medical assessment, particularly with pelvic pain, feeling full quickly, urinary frequency, unexplained weight loss or blood in the stool. Persistent bloating can sometimes signal an ovarian or another medical condition, so don’t simply accept it as part of getting older (Cancer Australia, n.d.; NIDDK, 2018b). Read more about the early symptoms of ovarian cancer.

References

• Anthony, W. E., Wang, B., Sukhum, K. V., D’Souza, A. W., Hink, T., Cass, C., Seiler, S., Reske, K. A., Coon, C., Dubberke, E. R., Burnham, C.-A. D., Dantas, G., & Kwon, J. H. (2022). Acute and persistent effects of commonly used antibiotics on the gut microbiome and resistome in healthy adults. Cell Reports, 39(2), Article 110649. https://doi.org/10.1016/j.celrep.2022.110649
• Cancer Australia. (n.d.). What are the symptoms of ovarian cancer? https://www.canceraustralia.gov.au/cancer-types/ovarian-cancer/what-are-symptoms-ovarian-cancer
• Kamp, K. J., Callan, N. G. L., Mitchell, E. S., Heitkemper, M. M., & Woods, N. F. (2026). Bloating during the menopause transition: Observations from the Seattle Midlife Women’s Health Study. Journal of Women’s Health, 35(9), 834–839. https://doi.org/10.1177/15409996261455326
• Moshiree, B., Drossman, D., & Shaukat, A. (2023). AGA clinical practice update on evaluation and management of belching, abdominal bloating, and distention: Expert review. Gastroenterology, 165(3), 791–800.e3. https://www.gastrojournal.org/article/S0016-5085(23)00823-5/fulltext
• National Institute of Diabetes and Digestive and Kidney Diseases. (2018a, May). Definition & facts for constipation. https://www.niddk.nih.gov/health-information/digestive-diseases/constipation/definition-facts
• National Institute of Diabetes and Digestive and Kidney Diseases. (2018b, May). Symptoms & causes of constipation. https://www.niddk.nih.gov/health-information/digestive-diseases/constipation/symptoms-causes
• National Institute of Diabetes and Digestive and Kidney Diseases. (2021a, June). Symptoms & causes of gas in the digestive tract. https://www.niddk.nih.gov/health-information/digestive-diseases/gas-digestive-tract/symptoms-causes
• National Institute of Diabetes and Digestive and Kidney Diseases. (2021b, June). Treatment for gas in the digestive tract. https://www.niddk.nih.gov/health-information/digestive-diseases/gas-digestive-tract/treatment
• Pimentel, M., Saad, R. J., Long, M. D., & Rao, S. S. C. (2020). ACG clinical guideline: Small intestinal bacterial overgrowth. The American Journal of Gastroenterology, 115(2), 165–178. https://doi.org/10.14309/ajg.0000000000000501