This is The Guardian.

Over the past few years, microplastics have been in the headlines time and time again.

They found them at the top of Mount Everest.

They found them at the bottom of the Everest, they found them at the bottom

of the Mariana Trench, and they found them everywhere in between. Even more importantly,

they find plastics in food all the time, in water, bottled water, tap water, and in the air that we

breathe. With all this plastic in the environment, scientists started looking for evidence of it

making its way inside of us.

Given that we're exposed to these plastics a lot, obviously a big question was,

where does it go once it's inside us?

Like, do we excrete a lot of it? Does it cross into organs?

And they began to find it.

Plastics have been found and reported in many humans and many different tissues, including the heart, blood, serum, and even in breast milk.

One study even claimed to have found up to a teaspoon's worth of plastic in human brains.

It's concerning stuff, enough to drive some people to pay for an extreme and expensive procedure

that purports to clean the blood.

The whole procedure takes a couple of hours and costs £10,000.

For best results, that may need to be repeated every year.

But last week, our Environment editor, Damien Carrington, reported on major doubts raised over

some of the key work on microplastics in the body.

One scientist said the criticisms amounted to a bombshell.

After all that worrying, it seems that the science on microplastics isn't as solid as we thought.

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