Absolute nonsense. Our oceans are full of Sodium in very high concentrations. Sodium Choloride, aka. NaCl, aka kitchen salt. About 11 grams per kg in ocean wat

Absolute nonsense. Our oceans are full of Sodium in very high concentrations. Sodium Choloride, aka. NaCl, aka kitchen salt. About 11 grams per kg in ocean water. And about 90 grams in the average human body. Lots of salt deposits in former salt lakes, mineral deposits, etc. Neither scarce nor hard to harvest. You would literally die without sodium in your body. Very common mineral and pretty easy to get to.