Microplastics
Definition, Sources, and Health Implications
Microplastics are plastic particles smaller than 5 mm in diameter, while nanoplastics are smaller than 1 micrometre. They enter the food chain through degradation of larger plastic waste, industrial processes, synthetic textiles, and packaging materials. Studies have found microplastics in drinking water, sea salt, honey, seafood, and other consumables worldwide.
- Sources: Primary microplastics (manufactured small, e.g., microbeads in cosmetics) and secondary microplastics (degradation of larger plastics)
- Health risks: Can carry toxic chemicals (BPA, phthalates, heavy metals) that may cause endocrine disruption; trigger inflammation in the digestive system; potential links to inflammatory bowel disease and other gastrointestinal disorders
- A 2024 study published in the Proceedings of the National Academy of Sciences found nanoplastics in bottled water at concentrations far higher than previously estimated
- WHO has called for more research on microplastic health impacts but acknowledged the need for reducing plastic pollution as a precautionary measure
- India generates approximately 3.5 million tonnes of plastic waste annually (CPCB data)
● Tracked since February 14, 2026 · last seen April 22, 2026 · updates as the daily brief publishes
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