Earlier quoted context omitted.
Sea salt has it's own problems due to it's microplastics content. Around 90% of domestic sea salt contains microplastics and the average adult consumes around 2,000 microplastic particles as a result every year. People who go out of their way to buy sea salt presumably ingest significantly more on average. My mother used to love sea salt, but recently switched to rock salt.
The estuary from which Maldon sea salt is harvested was also used for cooling nuclear reactors from the '60s until 2002 [1], so microplastics probably aren't even its most interesting feature. [1] https://en.wikipedia.org/wiki/Bradwell_nuclear_power_station
I will be dissapointed if I don't get some sort of salty superpowers then.