Medical Bulletin 14/September/2026 - Video

Here are the top medical news for today:

New Study Uncovers Link Between Menopause and Gut Inflammation in Women

Menopause may affect more than reproductive and bone health, with new research suggesting that the transition is also linked to changes in the gut barrier and increased inflammation.

Published in the Journal of Clinical Investigation, the study analysed 964 women across 3,586 time points before, during and after their final menstrual period. Researchers tracked blood markers linked to damage in the gut lining and immune activation caused by microbial products entering the bloodstream.

The findings showed that gut barrier damage may begin around 2.5 years before the final menstrual period. A marker of intestinal cell damage gradually increased during this period, followed about six months later by a rise in a marker of immune activation.

Both changes continued after menopause, reaching their highest levels around six to six-and-a-half years later before stabilising. Overall, the gut damage marker increased by about 26%, while the immune activation marker rose by 7.5%.

Researchers say the findings suggest that declining ovarian hormones, including oestrogen, may be linked to weakening of the gut barrier. When this protective barrier becomes less effective, microbial substances may enter the bloodstream and contribute to low-grade inflammation.

However, the study does not prove that gut barrier damage causes menopausal symptoms or directly leads to conditions such as heart disease or osteoporosis. The markers studied are indirect measures, and more research is needed to understand their long-term clinical significance.

The findings could encourage a broader approach to menopause care. Experts say maintaining a healthy diet, regular physical activity and other healthy lifestyle habits may support gut and overall health.

Researchers caution that treatments such as probiotics or hormone therapy cannot yet be recommended specifically to repair gut damage based on this study.

Overall, the research highlights a potentially important biological change during menopause and supports further investigation into how ovarian ageing, gut health and inflammation may be connected.

REFERENCE: Brandilyn A. Peters; Menopause and “leaky gut”: implications for midlife women’s health; J Clin Invest. 2026;. https://doi.org/10.1172/JCI209807.

Drinking Very Hot Beverages Linked to Threefold Higher Oesophageal Cancer Risk: Study

Drinking very hot tea or coffee may significantly increase the risk of a type of oesophageal cancer, with the largest study of its kind finding that drink temperature plays an important role.

Published in the International Journal of Cancer, the study analysed hot-drink habits of nearly 980,000 people in the UK and followed them for more than 14 years. Researchers led by Dr Keren Papier from the University of Oxford examined whether drink temperature and consumption frequency were linked to oesophageal cancer.

People who reported drinking beverages at “very hot” temperatures had about three times the risk of developing oesophageal squamous cell carcinoma (SCC) compared with those who drank them warm, after accounting for how often they consumed hot drinks.

The study also found that people drinking six or more hot drinks each day had a 71% higher risk of SCC than those consuming fewer than six, after considering drink temperature. However, neither temperature nor frequency showed a clear association with oesophageal adenocarcinoma, another major type of oesophageal cancer.

Very hot drinks may damage cells lining the oesophagus, or foodpipe, through repeated heat exposure. Smoking and alcohol consumption are also major risk factors for oesophageal cancer.

The researchers stressed that participants estimated how hot their drinks were, rather than measuring exact temperatures. This makes the findings less precise and means the study cannot prove that very hot drinks directly cause cancer.

Cancer experts said people do not need to stop drinking tea or coffee but should allow very hot beverages to cool until they are comfortable to drink.

The findings suggest that reducing both the temperature and frequency of very hot drinks could potentially prevent some oesophageal SCC cases. However, more research is needed to understand the relationship and determine how much cooling is beneficial.

REFERENCE: K. Papier, K. Gaitskell, S. Floud, and G. K. Reeves, “ Hot Drinks and Oesophageal Cancer: Prospective Analyses in Around 1 Million UK Adults,” International Journal of Cancer (2026): 1–9, https://doi.org/10.1002/ijc.70654.

Study Finds Aortic Structure May Influence Midlife Increases in Pulse Pressure Among Women

Heart health changes related to ageing may begin much earlier in women than previously thought, with new research suggesting pulse pressure may start shifting nearly two decades before menopause.

Published in Hypertension, the study analysed 6,760 women from the Framingham Heart Study. Researchers examined pulse pressure, the gap between the upper and lower blood pressure numbers. A wider pulse pressure can signal a stiffer aorta.

The researchers found that pulse pressure reached its lowest point and then began rising in women in their late 30s, around a decade earlier than in men. The timing was not affected by whether women experienced early, average or late menopause.

This change occurred up to 20 years before the final menstrual period. After midlife, pulse pressure rose faster in women. By age 60, women had a higher average pulse pressure than men.

The findings challenge the idea that menopause itself is the main trigger for increasing aortic stiffness. Researchers suggest that vascular ageing may begin years before menopause, although changes could accelerate during the menopause transition.

A wide pulse pressure is associated with higher risks of cardiovascular disease, dementia and kidney disease. It may also indicate blood vessel ageing and make high blood pressure harder to treat with usual medicines.

Researchers said doctors should pay closer attention to pulse pressure in women. A pulse pressure above 60 mm Hg, such as 130/70 mm Hg, may warrant monitoring over time.

However, the observational study cannot prove cause and effect, and menopause timing was self-reported. Most participants were of white European ancestry, so the findings may not apply equally to all populations.

Experts say cardiovascular health should be addressed well before menopause, giving women an opportunity to identify and manage risk early and better protect long-term heart health.

REFERENCE: Amy Y. Habib, et al.; Relations of Menopause Timing With Pressure Pulsatility in the Framingham Study; Hypertension; 2026; DOI: 10.1161/HYPERTENSIONAHA.126.27015

Higher Air Pollution Exposure Linked to Increased Glaucoma and Cataract Risk: Study

Air pollution may affect more than the heart and lungs. Research suggests that people living in areas with higher pollution levels may face a greater risk of glaucoma and cataract.

Presented at the 44th Congress of the European Society of Cataract and Refractive Surgeons, the research combined findings from 41 observational studies involving millions of people, from East Asia and the UK.

Cataract causes clouding of the eye’s lens and is the leading cause of impaired vision worldwide, affecting about 94 million people. Glaucoma damages the nerve connecting the eye to the brain and can cause permanent vision loss.

Researchers examined several pollutants, including fine particles called PM 2.5 and PM 10, nitrogen dioxide, sulphur dioxide, ozone and carbon monoxide. They compared pollution exposure with diagnoses of glaucoma, cataract and age-related macular degeneration.

The clearest link was seen with PM 2.5, tiny particles found in smoke, vehicle exhaust and industrial pollution. People living in the most polluted areas had up to 70% higher odds of glaucoma than those in the least polluted areas. Higher pollution was consistently linked with a greater risk of cataract.

Researchers estimated that each increase in pollution exposure was associated with about an 8% rise in glaucoma risk and a 4% rise in cataract risk. Evidence for age-related macular degeneration was less consistent, while links with other pollutants were weaker or mixed.

Scientists suggest that fine particles may contribute to inflammation and oxidative stress. Over years, these effects could potentially damage the optic nerve or the eye’s lens. However, because the studies were observational, they cannot prove that air pollution directly causes glaucoma or cataract.

Researchers say further studies, especially in highly polluted regions, are needed. The findings nevertheless add eye health to the reasons for reducing air pollution.

REFERENCE: Ahmed Alnabihi et al.; Smog and sight: epidemiological evidence on the link between air pollution and ocular aging: a comprehensive systematic review and meta-analysis’; European Society of Cataract and Refractive Surgeons