Archive · 10 Nov 2025
Microplastics in Air Carry Toxins and Microbes to Lungs, Study Finds
Imagine tiny pieces of plastic, like threads from your clothes or bits from packaging, floating in the air.
Scientists found these tiny plastic bits in busy markets in Indian cities.
These plastic pieces are like little backpacks that can carry bad things, such as harmful germs and heavy metals like lead.
The plastic's rough surface is a good place for these germs to stick.
When people breathe, these tiny plastic particles with their dangerous passengers can go into their lungs.
This is concerning because these things can make people sick.
The researchers found the most tiny plastic bits in the air during winter evenings.
They are worried this is a new type of air pollution that we haven't paid much attention to.
Airborne microplastics, primarily from synthetic clothing fibers, can transport toxic contaminants and microbes to human lungs.
Scientists detected bacteria, fungi, lead, arsenic, and chromium on microplastic particles sampled from Indian marketplaces.
Average concentrations of inhalable microplastics varied across cities, with Calcutta and Delhi showing higher levels than Chennai and Mumbai.
Polyester fibers from clothing were the most common type of airborne microplastic found.
High levels of inhalable microplastics were observed during winter evenings, linked to heavy footfall and poor waste management.
- Who
- Scientists at the Indian Institute of Science Education and Research (IISER) in Calcutta
- What
- Documented airborne microplastics carrying toxic contaminants and microbes to lungs
- When
- Analysis of air samples from marketplaces during winter evenings
- Where
- Marketplaces in Calcutta, Chennai, Delhi, and Mumbai
- Why
- To conduct India's first systematic assessment of inhalable microplastics and their potential health implications
Concerns about Microplastic Exposure
Mitigation and Further Research
Health Risks
Concerns about Microplastic Exposure
Airborne microplastics act as 'Trojan horses' carrying toxic contaminants like lead, arsenic, and chromium, along with disease-causing microbes, to the lungs, potentially triggering inflammatory processes and increasing the risk of various health disorders including cancer.
Mitigation and Further Research
While the study highlights significant findings, further research is needed to fully understand the long-term health impacts and establish definitive causal links between microplastic inhalation and specific diseases.
Sources and Transport
Concerns about Microplastic Exposure
Microplastics, primarily from synthetic clothing fibers, packaging, and vehicle emissions, are a significant airborne pollutant in urban markets, accumulating due to factors like open sewage drains and poor waste handling.
Mitigation and Further Research
The study identifies polyester fibers from clothing as the most abundant component, indicating a need to investigate the lifecycle of textiles and their contribution to air pollution.
- Study Focus
- India’s first systematic assessment of inhalable microplastics in the air
- Primary Microplastic Source
- Polyester fibres from clothing
- Contaminants Found
- Lead, arsenic, chromium, bacteria, fungi
- Highest Microplastic Levels
- Winter evenings in crowded urban markets
- Microplastics within PM10
- 0.2% to 5.6% depending on location
- Estimated Daily Inhalation (Calcutta)
- 370 particles