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Calcium
In 1808, a young Humphry Davy hooked his new battery to a paste of "lime," boiled off the mercury, and—against all expectations—pulled a silvery metal from...
Chromium
You're staring at a chrome-colored capsule that promises steadier energy and better blood sugar. Here's the paradox: Europe says chromium isn't even essential,...
Folate
You pick up a loaf of bread, unaware it's part of a global prevention program that quietly helps thousands of babies avoid paralysis and death every year—and...
Magnesium
On a summer day in 1618, a farmer in Epsom, England led his cows to a spring. They refused to drink—too bitter. But when he splashed the water on a rash, it...
Vitamin B12 (cobalamin)
In clinics a century ago, pernicious anemia was a quiet death sentence—until raw liver, of all things, pulled patients back from the brink. Today, the same...