Vitamin D, B1, and B12 don’t just “matter” for older legs — when they run low, they start stripping power out of the thighs, dulling nerve signals, and turning steady steps into shaky ones. That weakness, the numbness, the heavy, dead feeling in the calves? That’s not random aging. That’s a system running on fumes. One day the stairs feel normal. Then suddenly the handrail becomes a habit, the bathroom trip turns into a careful negotiation, and standing up from a chair feels like your legs are full of wet sand. By late afternoon, the lower body feels drained, puffy, and unreliable, like it was built from cheap parts. The ugly truth is that the body does not weaken in one dramatic crash. It loses tiny pieces of output, over and over, until the signal reaches the legs too late and too weak to matter. The medical machine loves to blame age, but what it often misses is the missing raw material your muscles and nerves were supposed to run on. The Mineral-Drain That Turns Strong Legs I...