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When Gut Bacteria May Be an Early Sign of Alzheimer’s Disease

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When it comes to a disease as complex as Alzheimer’s, scientists have found a number of factors that can contribute to your risk, from genes to circulatory issues, inflammation, and lifestyle behaviors.

In a new study published in Science Translational Medicine, researchers from Washington University in St. Louis report on another possible factor: the types of bacteria living in the gut. Experiencing changes in gut bacteria populations may be an early marker for developing the disease, the scientists found. These differences can often begin years before the first symptoms of cognitive decline, such as memory loss and confusion, appear.