Causes of foot cramps in the elderly include overwork, cold irritation, osteoporosis, and lumbar disc herniation. 1. Overexertion: Overexertion, such as long-distance traveling, climbing mountains and heights, will lead to the accumulation of lactic acid in the feet, legs and other parts of the body, and the accumulation of too much cramps will occur. 2. Cold stimulation: If the room temperature is low at night in winter, or if your feet are exposed to the quilt when you sleep, the cold stimulation will also lead to foot cramps. 3. Osteoporosis: The reduction of sex hormones in the elderly will stimulate osteoclasts and inhibit osteoblasts, thus causing bone loss. In addition, the decline in nutrient absorption ability of the elderly, resulting in vitamin D deficiency, causing calcium deficiency and the development of osteoporosis. This condition results in spasms, or cramps, in the feet and legs. 4. Lumbar disc herniation: Lumbar disc herniation can lead to nerve compression, which is prone to foot cramps. There may also be other causes of foot cramps in the elderly, such as spinal stenosis, arteriosclerosis occlusion of the lower limbs, and cerebral infarction. It is recommended to go to the hospital in a timely manner to improve the examination, to clarify the cause of the disease and then follow the doctor’s instructions for treatment.