Drugs given to hospital patients could contain thousands of dangerous plastic particles, a study has warned.

The research, published in journal Environment & Health, comes amid growing concern around the impacts of microplastics.

These particles – tiny fragments produced by degrading plastic – have been found in the human brain, liver, heart and even breast milk. Research has linked microplastics to chronic illnesses including cancer, heart disease and inflammatory bowel disease.

And now, researchers from Fudan University in Shanghai, claim they could be entering the body intravenously.

In hospital many drugs, as well as fluids and nutrients, are administered through plastic IV bags.

The scientists bought two different common brands of 8.4oz bags of IV saline solution, which tends to form the base of any drug injected. They then filtered the liquid out of each bag to catch the microplastics contained, estimating the total number.

Drugs given to patients in hospital through IV drip bags could contain thousands of microplastic particles (file photo)

A total of 7,500 particles were estimated to be floating in each IV bag tested, which would have then have been injected into a patient's bloodstream (file photo)

A total of 7,500 particles were estimated to be floating in each IV bag tested, which would have then have been injected into a patient’s bloodstream (file photo)

Both samples were found to contain fragments of the same material as the bags, suggesting that they had shed microplastics into the solutions.

A total of 7,500 particles were estimated to be floating in each bag, which would have then been injected directly into a patient’s bloodstream.

In a standard IV drip used to treat dehydration, the researchers argue that this would rise to 25,000 particles. And during abdominal surgery, which requires multiple IV bags, the researchers calculated that this number would surpass 52,000. 

But experts say the amount in IV bags is far lower than other everyday products.

Research suggests that plastic water bottles contain more than 200,000. 

The researchers also warn that the findings do not mean that patients should avoid IV treatments as the conditions they are designed to treat, are significantly more dangerous than ingesting microplastics.

Instead, they recommend IV bags are kept away from direct light or heat, in order to limit microplastic shedding. They also suggest that, in future, IV drips could have a filter to remove the majority of the particles.

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