The invisible threat: micro- and nanoplastics in ecosystems and human bodies

Contamination by micro- and nanoplastics became a growing environmental and health concern worldwide. These tiny particles, originating from the degradation of plastics or created for industrial use, invaded ecosystems and the human body. In Argentina, this problem emerged as a significant challenge for public health. Microplastics were detected in rivers, the Argentine Sea and even in breast milk, which caused alarm due to their possible health effects, such as hormonal alterations, inflammation and accumulation in vital organs. The main sources included urban plastic waste, the textile industry, cosmetic products and agricultural practices. Although similar situations were also observed in Latin America, research and public policies showed different levels of progress. The urgent need to improve waste management, promote more effective regulations and environmental education to mitigate the impact of these pollutants was highlighted.