This common vitamin deficiency can mimic normal aging

Feeling tired and foggy? It might not be aging—it could be a vitamin B12 shortfall. According to recent research, B12 plays a crucial role in keeping your mitochondria—your cells' power plants—running smoothly. A deficiency can drain your energy and cloud your thinking long before you'd show traditional signs. Scientists have known about B12's importance for nearly a century, when it saved lives by treating pernicious anemia, but new findings reveal the vitamin's role in cellular health runs even deeper than we thought.

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