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Medical conditions such as diabetes can cause foot cramps due to the lack of oxygen supplied to the feet. It is very important that you eat properly and get enough vitamins and minerals. A lack of potassium in your system can cause cramps in your feet and legs. Vitamin D is also important to healthy feet and bones.
A lack of essential vitamins and minerals can also lead to foot cramps. Low potassium levels often cause cramps in both the legs and the feet. Nutritional deficiencies can be corrected by eating a balanced diet and using supplements to provide the body with anything it is not getting from the food.