All your emulation centers on the saltworks; instead of ploughs and scythes, you work rollers whence comes all your gain. Upon your industry all other products depend for, although there may be someone who does not seek gold, there never yet lived the man who does not desire salt…
–Cassidorus, A.D. 523
We’ve considered the importance of salt in history and the basic physiological processes that need salt. Clearly salt is not a poison that we should avoid at all costs. The big questions are how much salt is necessary, how much is too much, and will eating salt drive up my blood pressure?
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