 microplastic MP, and nanoplastic NP, pollution has become increasingly prevalent in the environment, with polymer-based plastics being the most common type of MP slash NP found. These plastics can carry a wide range of contaminants, leading to potentially harmful effects on both aquatic and terrestrial organisms. Despite this, there is limited understanding of the potential health risks posed by MP slash NP to humans. In order to gain insight into these risks, we conducted a comprehensive literature review and examined existing data from experimental animal studies. Our findings suggest that MP slash NP exposure may lead to adverse effects on human health, including disruption of hormonal systems, immune system suppression, and increased risk of cancer. This article was authored by Carsten Grote, Fabian Brussell, and Ann-Kathryn Vlassel.