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Microplastic Human Dietary Uptake from 1990 to 2018 Grew across 109 Major Developing and Industrialized Countries but Can Be Halved by Plastic Debris Removal
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Researchers mapped microplastic dietary intake across 109 countries from 1990 to 2018 and found that intake grew more than six-fold in many nations, with Indonesia topping the list at 15 grams per person per month. The study suggests that removing 90% of plastic debris from waterways could cut microplastic intake by nearly half in the most affected regions, highlighting cleanup as a practical way to reduce health risks.
Microplastics (MPs), plastic particles smaller than 5 mm, are now a growing environmental and public health issue, as they are detected pervasively in freshwater and marine environments, ingested by organisms, and then enter the human body. Industrial development drives this environmental burden caused by MP formation and human uptake by elevating plastic pollution levels and shaping the domestic dietary structure. We map the MP human uptake across 109 global countries on five continents from 1990 to 2018, focusing on the world's major coastlines that are affected by plastic pollution that affects the United Nations' Sustainable Development Goals (SDGs): SDG 6 (Clean Water and Sanitation), SDG 14 (Life Below Water), and SDG 15 (Life on Land). Amid rapid industrial growth, Indonesia tops the global per capita MP dietary intake at 15 g monthly. In Asian, African, and American countries, including China and the United States, airborne and dietary MP uptake increased over 6-fold from 1990 to 2018. Eradicating 90% of global aquatic plastic debris can help decrease MP uptake by more than 48% in Southeast Asian countries that peak MP uptake. To reduce MP uptake and potential public health risks, governments in developing and industrialized countries in Asia, Europe, Africa, and North and South America should incentivize the removal of free plastic debris from freshwater and saltwater environments through advanced water treatment and effective solid waste management practices.
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This Indonesian review collates data on microplastic contamination across the country's marine and coastal environments, documenting debris in fish, shellfish, and seawater, and assessing exposure and health risks for the Indonesian population. Given Indonesia's status as one of the world's largest sources of ocean plastic waste, the findings underscore both local exposure risks and the country's critical role in global microplastic pollution.
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Indonesia has some of the highest microplastic pollution in its waters worldwide, and this review of 42 studies finds these tiny plastic particles are showing up in the fish people eat—causing DNA damage and organ harm in the fish themselves, while also carrying toxic heavy metals along for the ride. Even more concerning, microplastics have been found in human blood, brain tissue, and breast milk, with links to reduced cognitive function, highlighting an urgent need for better plastic waste policies to protect public health.
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