The kidneys play a critical role in overall health: they filter toxins, regulate body fluids, balance electrolytes, and support bone metabolism. When kidney function begins to decline, certain outward signs—especially in the feet—may serve as early warnings. Swelling in the Feet (Edema)Excess fluid in the lower limbs can occur when the kidneys fail to properly remove water and salt. Watch for tighter shoes or socks, noticeable puffiness, or skin that temporarily dents when pressed. Numbness, Tingling, or TwitchingThe buildup of toxins like urea may damage peripheral nerves, often starting in the feet. This can cause burning sensations, tingling, or numbness....
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