Microplastics in Humans: Risk or Research Gap? Introduction Microplastics—tiny plastic particles less than 5 millimeters in size—have become an unavoidable part of modern life. Found in oceans, drinking water, food, and even the air we breathe, these particles have recently been detected in human tissues, sparking widespread concern. But while headlines often suggest alarming health risks, scientists remain divided on what microplastics truly mean for human health. What Are Microplastics? Microplastics originate from the breakdown of larger plastic waste or are manufactured intentionally for products like cosmetics, textiles, and industrial abrasives. Once released into the environment, they persist for decades, entering ecosystems and food chains. Humans are exposed primarily through ingestion, inhalation, and possibly skin contact. Microplastics Inside the Human Body Recent studies have reported the presence of microplastics in human blood, lung tissue, placentas, and even breas...