How are microplastics entering the human body?

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Microplastics Are Entering the Human Body Through Inhalation, Ingestion, and Transplacental Transfer

Scientific studies increasingly indicate that microplastics are entering the human body through various pathways, including inhalation of airborne particles, ingestion of contaminated food and water, and transfer from mother to foetus. These tiny plastic fragments, often invisible to the naked eye, are pervasive in the environment and have been detected in multiple human tissues and organs.
Inhalation of Airborne Microplastics

Airborne microplastics, particularly microfibres shed from synthetic clothing, are a significant source of human exposure. Researchers have identified microplastics, such as polypropylene and PET, within human lung tissue. The depth to which these particles penetrate the lungs and their size have been noted as surprising findings.
Ingestion of Microplastics

Humans have likely been consuming and drinking plastics for years, as these particles are present in food and water sources. While estimates vary, some reports suggest individuals may ingest or inhale substantial amounts of plastic weekly. For instance, one study estimated a weekly intake equivalent to a credit card, though other calculations place it closer to a grain of salt.
Detection in Blood and Placental Tissue

Further evidence of microplastic presence in the human body comes from their detection in blood samples and placental tissue. Studies have reported finding PET in human blood, raising concerns that these particles could be transported to various organs via the bloodstream. Additionally, microplastics have been identified in both maternal and foetal placental tissue, prompting significant concern regarding potential developmental consequences for foetuses.

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How are microplastics entering the human body?

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