Are microplastics in table salt from sea salt worse than mined salt?

What's actually in it

Sea salt is not just salt. It is often contaminated with microplastics that come from our polluted oceans. These tiny plastic bits don't just sit there. They can act as a home for pathogenic Vibrio, which are dangerous bacteria that can cause illness. When you use sea salt, you may be adding these plastic-carrying bacteria directly to your meals.

It is not just the salt itself that is the problem. Many people use plastic grinders to season their food. A 2026 study in Sci Total Environ shows that these plastic grinder heads shed microplastics into your salt every time you twist them. Whether you buy sea salt or mined salt, using a plastic grinder means you are likely adding plastic particles to your plate.

What the research says

Peer-reviewed research highlights the real risks of these contaminants. A 2026 study in Mar Pollut Bull found that microplastics found in sea salt can amplify pathogenic Vibrio and even impair the development of living organisms. This means the plastic is not just an "inert" piece of trash. It is a carrier for biological threats.

The problem of plastic in our food chain is growing. A 2026 study in J Agric Food Chem confirms that microplastics are now found throughout our food supply. Furthermore, a 2026 study in Environ Geochem Health points to the hidden dangers of these particles, linking them to potential triggers for autoimmune diseases. When you choose your salt, remember that the source matters, but the tools you use to grind it matter just as much.