Back in the early 1800s the production of potassium nitrate (saltpeter), an essential component of gunpowder, was a booming industry.
Video of Dr Joe Schwarcz: Snacking on Seaweed
鈥淭ake a dose of seaweed or burnt sea sponge twice a year!鈥� That was the ancient Chinese remedy for goiter. Almost four thousand years ago Chinese medical writings described the troublesome swelling...
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