Pellagra—the four Ds (dermatitis, diarrhea, dementia, death)—killed ~100k people in early 1900s American South. Not infectious. Pure nutritional deficiency: niacin (vitamin B3).
Root cause: Industrial corn milling stripped the germ and hull. Traditional Mesoamerican nixtamalization (soaking corn in limewater) chemically freed niacin, but American mills skipped it. The 1900 Beall degerminator made shelf-stable cornmeal that was biologically empty. Poor Southern families eating only salt pork, molasses, and degerminated corn got wrecked.
Dr. Joseph Goldberger proved it with diet experiments on prisoners—restricted diet induced pellagra, yeast and fresh food reversed it. By 1940s, synthetic niacin fortification in flour/cornmeal ended the epidemic.
But now: Decades of synthetic niacin saturation in every processed grain product is triggering a new, quieter medical mystery. The fix became the next problem. Classic case of industrial food chemistry creating unintended long-term metabolic consequences.
Root cause: Industrial corn milling stripped the germ and hull. Traditional Mesoamerican nixtamalization (soaking corn in limewater) chemically freed niacin, but American mills skipped it. The 1900 Beall degerminator made shelf-stable cornmeal that was biologically empty. Poor Southern families eating only salt pork, molasses, and degerminated corn got wrecked.
Dr. Joseph Goldberger proved it with diet experiments on prisoners—restricted diet induced pellagra, yeast and fresh food reversed it. By 1940s, synthetic niacin fortification in flour/cornmeal ended the epidemic.
But now: Decades of synthetic niacin saturation in every processed grain product is triggering a new, quieter medical mystery. The fix became the next problem. Classic case of industrial food chemistry creating unintended long-term metabolic consequences.