Eli5 how do micro-plastics end up in our bodies from things like bottles and plastic packaging

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I have been googling how micro plastics get into our bodies and I get a lot of articles saying it’s from drinking and eating from plastic but nothing explains HOW the micro plastics are actually leaving the containers and getting into us. I specifically want to understand how drinking out of a plastic bottle transfers plastic to our body? I understand microwaving plastic leaches chemicals into food but I don’t get how drinking cold water from plastic could transfer the micro plastic to our bodies.

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Micro-plastics can be released into the environment when we use and dispose of plastic products. They can also enter the food chain when animals mistake them for food and ingest them.

Also they can be inhaled when they are airborne through the use of plastics in manufacturing or through the breakdown of larger pieces of plastic waste.

Once airborne, micro-plastics can be transported long distances by wind and other atmospheric processes, potentially causing them to end up in remote areas where they can be inhaled by humans and other animals.

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