Micro- and nanoplastic transfer, accumulation, and toxicity in humans

Area of Science:

• Environmental Science
• Toxicology
• Materials Science

Background:

• Ubiquitous use of plastics in daily life.
• Growing concern over plastic waste and disposal.
• Identification of microplastics and nanoplastics in environmental matrices (air, water) and consumables.

Purpose of the Study:

• To review the probable pathways of human exposure to plastic particles.
• To summarize reported toxicological outcomes and concerns associated with plastic particle exposure.
• To offer considerations for future research and risk assessment.

Main Methods:

• Literature review of scientific publications.
• Synthesis of data on plastic particle identification in various media.
• Analysis of toxicological studies and exposure assessments.

Main Results:

• Plastic micro- and nanoparticles are prevalent in air, water, and food.
• Potential human exposure routes include inhalation, ingestion, and dermal contact.
• Emerging toxicological data indicates potential health concerns, necessitating further investigation.

Conclusions:

• Human exposure to plastic particles is a significant environmental health issue.
• Understanding exposure routes and toxicological impacts is crucial for risk assessment.
• Further research is needed to fully evaluate the health implications of microplastic and nanoplastic exposure.