A study published in the International Journal of Molecular Sciences has uncovered startling effects of microplastics on mice, revealing significant behavioral changes and immune responses in both young and old subjects. This research expands our understanding of how these environmental pollutants might be affecting mammals — potentially including humans. Microplastics, tiny plastic particles less than 5 millimeters in diameter, have been a growing concern for environmentalists and health professionals alike. Found in everything from water bodies to human tissues, these particles have become a…