Which Fish Contain the Most Microplastics — and Why You Should Avoid Eating Them

An Australian study revealed that 100 grams of sardines contain up to 30 micrograms of plastic. Other seafood such as squid, oysters, and the now-famous blue crabs also contain microplastic levels that may be harmful to health if consumed regularly. Let’s take a closer look at which fish are best avoided — and why.

 Microplastics: A Growing Threat to Our Health

We’ve often discussed how microplastics — tiny fragments of plastic less than 5 mm in size — enter our bodies through the food we eat, the water we drink, and even the air we breathe, causing damage that is still not fully understood.

According to a WWF analysis, the average person ingests around 5 grams of plastic every week — roughly the weight of a credit card. Alarmingly, shellfish account for around 10% of that intake.

A recent study by the Quex Institute (a collaboration between the Universities of Exeter and Queensland) confirmed the presence of microplastics in nearly every type of seafood tested.

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