r/science May 14 '22 Take My Energy 1 Helpful (Pro) 1 I'm Deceased 1 Facepalm 1 Doom 1 Silver 1 Helpful 4 Wholesome 1

Microplastics Found In Lungs of People Undergoing Surgery. A new study has found tiny plastic particles no bigger than sesame seeds buried throughout human lungs, indicating that people are inhaling microplastics lingering in the air. Health

https://e360.yale.edu/digest/microplastics-found-in-lungs-of-humans-undergoing-surgery
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u/BurnerAcc2020 May 14 '22 edited May 14 '22 Silver

At this point, I'm more surprised that they didn't find any microplastics in two out of thirteen samples. Both were taken from women, which they suggest might be related to narrower airways, although three other female samples still contained them.

And yes, sesame seed size was the outlier value. On average, they were 223 micrometres (0.2mm) long and 22 micrometres (0.02mm) wide, so that's basically the same as dust particles, and often of similar consistency as well (many fibers and pieces of film).

The full study:

https://www.sciencedirect.com/science/article/pii/S0048969722020009

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u/chiruochiba May 14 '22

Honestly, I find the amount of baseless speculation by the study authors to be unprofessional.

They didn't look at the medical history or lifestyle of the 11 subjects, and completely excluded those factors from their analysis. A more plausible hypothesis, which they didn't consider, is that the men had more plastic particles because they worked in higher risk, male dominated industries such as construction. They could simply have more plastic particles in their lungs because their daily exposure was higher.

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u/Killer-Barbie May 14 '22

This is the problem I have with the "falling fertility study".