Episode Details

New research is shaking up the supplement world, especially for older adults: vitamin D, omega-3s, and glucosamine—long thought harmless or beneficial—may actually accelerate cognitive decline. Recent studies link these common supplements to faster mental deterioration in aging populations, though causation isn’t proven. Scientists suspect aging brains process nutrients differently, and the blood-brain barrier may play a role. Unlike prescription drugs, supplements aren’t adjusted for age, raising urgent questions about who they’re truly meant for—and whether we should rethink how we use them as we grow older.

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