Microplastics are everywhere, but are they harming us?

(5 Aug 2024)
RESTRICTION SUMMARY:

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ASSOCIATED PRESS
ARCHIVE: Luzira, Kampala, Uganda – 18 February 2023
1. Various of heaped sacks of plastic waste

ASSOCIATED PRESS
Piedmont, California – 31 July 2024
2. SOUNDBITE (English) Tracey Woodruff, Director of the Program on Reproductive Health and the Environment at University of California, San Francisco:
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“We can say for sure that studies have linked microplastic exposures to adverse health effects that can be observed in humans. Based on our evidence review and the summary of the evidence, we say it’s suspected. So, to us, suspected is not known, but it also means we should probably be taking steps to mitigate those exposures.”

ASSOCIATED PRESS
ARCHIVE: London, UK – 25 May 2023
3. Microplastics in researcher’s hand
4. Microplastics in jar being mixed with water

ASSOCIATED PRESS
ARCHIVE: New York – 8 January 2024
5. Various of physical chemist Naixin Qian using a computer to view plastic nanoparticles, generated via a microscope scan

ASSOCIATED PRESS
Chestnut Hill, Massachusetts – 24 July 2024
6. SOUNDBITE (English) Dr. Philip Landrigan, Director of the Program for Global Public Health and the Common Good at Boston College:
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“So I think we know enough about microplastics to tell people to minimize their exposure to plastics. Don’t microwave in plastic. Try to avoid — I know it’s difficult — but try to avoid buying food that’s wrapped in plastic. Go for cardboard, go for glass. Go for other safer materials."

ASSOCIATED PRESS
ARCHIVE: Albany, New York – 17 April, 2024
7. Shop worker stocking yogurt shelf
8. Picking strawberries in plastic from shelf at food co-op
9. Close of packaged carrots
10. Pan of produce section
STORYLINE:
Microplastics have been found in the ocean and the air, in our food and water. They have been found in a wide range of body tissues, including the heart, liver, kidneys and even testicles.

But are they actually harming you?

Evidence suggests they might, but it’s limited in scope. Some researchers are worried, but acknowledge there are lots of unanswered questions.

Dr. Marya Zlatnik, a San Francisco-based obstetrician who has studied environmental toxins and pregnancy, has seen studies raising concerns about microplastics’ impact on the health of babies and adults.

But it’s a young research field, and it’s not something she generally discusses with patients.

Here’s a look at what’s known so far:

WHAT ARE MICROPLASTICS?

Plastics are man-made materials — many of them derived from oil or other petroleum products. They can break down into smaller particles, through exposure to heat and weather and even animal digestion. 

Researchers have increasingly been interested in microplastics, which can be as wide as a pencil eraser or as small as a fraction of the width of a human hair.

Nanoplastics, another area of study, are even smaller.

These minuscule plastics have been detected in air, water and soil, in milk, and in bottled and tap drinking water. They also have been found in a variety of foods, including salt, sugar, honey, rice and seafood. 

ARE THERE MICROPLASTICS IN YOU?

Most likely yes.

There is scientific debate about how much people inhale and ingest, and it can vary on what they eat and drink and where they live, researchers say. 

Some Australian researchers, on behalf of the World Wildlife Fund, calculated in 2019 that many people each week consume roughly 5 grams of plastic from common food and beverages — the equivalent of a credit card.

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