Microplastics—tiny plastic fragments less than 5mm in size—have been found in drinking water, seafood, table salt, and even human blood and breastmilk. These particles can carry endocrine-disrupting chemicals like BPA and phthalates, alter the gut microbiome, provoke immune responses, and impair detox pathways. Functional medicine approaches microplastic exposure by identifying the sources and symptoms, supporting the body’s ability to eliminate toxicants, and strengthening barriers like the gut lining and cell membranes. Reducing exposure and enhancing detoxification can protect long-term hormonal, neurological, and immune health.