A healthier gut could mean a healthier brain. 🥗🦠🧘♀️
Published In: Alzheimer’s & Dementia
Date: January 2026
Authors: Warren et al.
Link to Study: https://doi.org/10.1002/alz.71023
Summary
This scoping review examined 58 human studies to understand the connection between gut health and brain health in people with mild cognitive impairment (MCI) and Alzheimer’s disease (AD). The review found consistent changes in the gut microbiome, particularly an imbalance known as dysbiosis, in those with cognitive decline. While probiotic and dietary interventions showed some promise in improving cognition and gut balance, results were inconsistent. More high-quality, long-term studies are needed.
Key Takeaways
✅ People with MCI and AD often have gut dysbiosis, including lower levels of beneficial bacteria like Faecalibacterium and Roseburia
✅ Alzheimer’s patients showed increased levels of bacteria like Escherichia coli, Akkermansia, and Enterococcus
✅ Some probiotics and Mediterranean-style diets showed potential cognitive benefits, but findings were mixed
✅ Changes in gut bacteria were linked with inflammation and may contribute to memory decline
✅ Future research needs more standardized methods and longer follow-up to clarify cause and effect
Why It Matters for You
Your gut and brain are more connected than you might think. Supporting a diverse gut microbiome through a healthy diet, regular exercise, and possibly probiotics, may help protect our memory as we age.
Citation
Warren, A., Wynia, Z., Corr, P.G., et al. (2026). The microbiota–gut–brain axis in mild cognitive impairment and Alzheimer’s disease: A scoping review of human studies. Alzheimer’s & Dementia, 22, e71023. https://doi.org/10.1002/alz.71023