Although swelling of the feet can be caused by heart or kidney problems the condition may persist even with diuretic or other treatments. The usual problem is varicose veins and poor circulation. Leg elevation and tight stockings can help, but active massage may be needed as well. After many months or years without adequate control the problem may not be completely reversible. The situation may be worse if heavy work or strain such as caused by constipation, and these may be additional issues to address.