If you're already genetically predisposed to Alzheimer's disease, consuming microplastics could trigger cognitive decline, according to a new study in mice from researchers at the University of Rhode Island.

The researchers wanted to see how microplastics might interact with genetic Alzheimer's risk to make brain dysfunction more likely – a combination of both the genes we're born with and the environment we live in.

Two groups of mice were used, one with the APOE4 gene variant that increases Alzheimer's risk , and one with the APOE3 variant that doesn't affect risk. In each group, some of the mice had microplastics added to their drinking water, and some didn't.

"There are modifiable factors we're studying related to Alzheimer's – diet, exercise, vitamins , and especially envir

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