In recent years, scientists around the world have discovered that microplastics are present almost everywhere in the environment—from the air we breathe to the oceans and even the food we eat. One surprising place where microplastics have been detected is sea salt and fleur de sel, two popular types of salt used in cooking.
This article explains what microplastics are, why they appear in sea salt, and what consumers should know.
What Are Microplastics?
Microplastics are extremely small pieces of plastic, generally smaller than 5 millimeters.
They are created from:
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The breakdown of plastic waste in the ocean
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Synthetic fibers from clothing
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Industrial plastic pellets
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Degradation of plastic products over time
These particles can spread widely in marine environments and become part of the ocean ecosystem.
Why Sea Salt May Contain Microplastics
Sea salt is produced by evaporating seawater in salt ponds. As the water evaporates, salt crystals form and are collected.
However, modern seawater already contains microplastics due to pollution. During the evaporation process, some of these microplastic particles may remain trapped in the salt crystals.
Studies conducted in several countries have found that:
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Many commercial sea salt samples contain microplastics
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The amount varies depending on the region
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Most particles are tiny plastic fragments or fibers
Does Fleur de Sel Also Contain Microplastics?
Fleur de Sel, often called “flower of salt,” is a delicate salt crystal that forms on the surface of seawater in salt ponds. It is usually harvested by hand and considered a premium salt.
Because fleur de sel forms on the surface of seawater, it can also come into contact with microplastics floating in the water.
Research suggests that:
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Fleur de sel may also contain microplastics
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Levels depend on the environmental conditions of the production area
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Fibers from textiles and degraded plastic particles are commonly found
Are Microplastics Harmful to Health?
Scientists are still studying the long-term health effects of consuming microplastics. Some concerns include:
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Possible accumulation in the human body
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Potential exposure to harmful chemicals carried by plastics
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Possible inflammatory effects
Although the amounts found in salt are generally small, awareness about food contamination is increasing.
Consumer Alternatives
Because of concerns about microplastics, some consumers choose salt sources that are less exposed to modern environmental pollution, such as:
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Underground rock salt
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Ancient mineral salt deposits
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Carefully tested natural salts
Salt formed from ancient underground deposits may have a lower risk of contamination because it was created millions of years ago before plastic pollution existed.
Conclusion
Sea salt and fleur de sel are natural and widely used culinary ingredients. However, due to modern ocean pollution, microplastics can sometimes be found in sea salt products.
Choosing salt from reliable sources and staying informed about food safety research can help consumers make better dietary decisions.
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