Red blood cells.

Microplastics have been found in human blood for the first time.

When blood samples from 22 anonymous donors were analysed, 17 of them were found to contain plastic particles, including PET (commonly used in drinks bottles), polystyrene (used in packaging) and polyethylene (used to make plastic carrier bags).

The research was commissioned by the campaign group Common Seas, which has launched a petition calling for urgent funding for more research.

In their words: “We have a right to know what all this plastic is doing to our bodies.”

The findings were also reported in The Guardian: Microplastics found in human blood for first time.