Sea salt is cleaner than rock salt because it's filtered through nature and factories, and it doesn’t sit in metal-heavy rocks for ages like mined salt does.

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Pro

26

Against

Evidence from Studies

Supporting (0)

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Community contributions welcome

No supporting evidence found

Contradicting (1)

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Community contributions welcome

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Contamination of Indian sea salts with microplastics and a potential prevention strategy

Cross-Sectional Study

2018 Oct

The study found microplastics in all sea salt brands tested, which means the salt isn't as clean as the claim says it is, even after filtration.

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Similar Assertions

Sea salt from clean oceans probably has fewer heavy metals than rock salt, and if cleaned right, it has almost no tiny plastic bits in it.

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39

87%

Some of the tiny plastic bits in sea salt might come from how it's made and handled after harvesting, not just from polluted ocean water.

39

0

82%

Sea salt made the old-fashioned way might have less plastic pollution in it than salt made in big factories — how it's made could affect how much microplastic ends up in it.

39

0

80%

Running dirty seawater through sand might catch most of the tiny plastic bits, so the salt we make from it could end up cleaner.

26

0

76%

Sea salt from Europe often has tiny plastic bits in it — on average about 466 pieces per kilo, but it can vary a lot between brands, from as low as 74 to over a thousand pieces per kilo.

39

0

71%