mollwollfumble said:
Let me pose the inverse question.
Is there anything safer to eat than microplastics?
Peanuts – no. May die from anaphylaxis.
Sugar – no. At the wrong time deadly to diabetics.
Glucose – no.
Artificial sweetener – not even a single one.
Mushrooms – no.
Tomatoes – no.
Potatoes – no.
Apples – no.
Meat – no.
From the article (you probably missed it).
>>Studies have shown that microplastic exposure can cause aneurysms and reproductive changes in fish, impair cognitive function in hermit crabs, lead to swimming abnormalities in shrimp and weaken the grip of mussels and potentially hamper their growth. We’ve also seen efforts to extrapolate these kinds of findings to humans through studies that use the genetically similar fruit fly as a model, which showed that microplastics can alter gene expression associated with stress response and oxidative damage.
“Much of what we know about microplastics has come from the marine environment research and it is only more recently that human impacts have come under scrutiny,” Jeanette Rotchell, principal investigator of microplastic impacts on human health at the University of Hull, told New Atlas.
Last December, scientists published research investigating the toxic effects of microplastic exposure on human cells. The first study of its kind, it built on previous work in this area such as research demonstrating that microplastics have the ability to alter the shape of human lung cells. This involved a systematic review of the available literature on the impacts of microplastics in lab-based exposure studies.
Among the toxic effects the team considered were cell death, impacts on the cell membranes, oxidative stress and characteristics akin to allergic reactions. The research showed, according to lead author Evangelos Danopoulos, that we are ingesting microplastics at “levels consistent with harmful effects on cells, which are in many cases the initiating event for health effects.” Though clearly not good news, there is an important distinction to be made between what occurs in laboratory experiments, and what we know for sure to be taking place in the human body.
“The limitation in the current scientific evidence is that although we know we are regularly exposed to microplastics, we do not exactly know how they will behave inside our bodies,” Danopoulos told New Atlas. “For example, we don’t know how much will simply pass through and be excreted and how much will have the ability to cross the barrier of the gastrointestinal system and make their way further in our bodies. More research is needed specifically to target these unknown and crucial elements.”
Research in rodents has hinted at these possibilities, such as a study last year showing that microplastics can infiltrate the blood-brain barrier in mice, pointing to potential toxic effects on mammal brains. But by and large, the question of how microplastics behave in the human body, and therefore the health risks they pose, is a great unknown. According to Rotchell, differences in the types of plastics used in these experiments, and those found in the environment, is one of the reasons why.<<