Gut bacteria may control estrogen levels and disease risk, new study reveals

New research highlights the role of gut bacteria in regulating estrogen levels in the body. Scientists have found that specific microbes and enzymes influence hormone circulation, with potential links to disease. The findings were published in the Proceedings of the National Academy of Sciences. The study reveals that disrupted gut communities can lead to excess estrogen. This hormone imbalance has been associated with an increased risk of breast and endometrial cancers. People in industrial societies and formula-fed babies show a higher capacity to recycle discarded estrogen, which may contribute to these effects.

Managing gut health through diet or probiotics could soon become a key method for hormonal regulation. Researchers suggest this approach might help prevent diseases tied to estrogen imbalances.

Separately, a study in Nature Communications explores the impact of climate change on allergies. Using a pollen emissions model, scientists predict an additional 19 days of high pollen counts each year. This could worsen seasonal allergies for many people.

In clinical research, pregnant women have often been left out of drug trials. Over the past 15 years, 75% of trials excluded them for safety concerns. Experts argue that including this group would improve drug safety and effectiveness for expectant mothers. The discoveries underline the importance of gut health in hormone regulation and disease prevention. They also point to the need for better pollen forecasts and more inclusive drug trials. These steps could improve health outcomes for vulnerable populations.