Healthy blood circulation is important to overall health and well-being, as strong and steady local blood flow delivers fresh nutrients to the cells and prevents accumulation of waste materials within the cells necessary to maintain healthy cell function. Conversely, poor local blood circulation can cause numerous acute and chronic health problems, and can manifest itself in symptoms of pain, numbness, weakness and swelling, and can exacerbate these symptoms in co-existing acute and chronic conditions. Chronic conditions that may result from poor blood circulation that is untreated and persists over a long period of time include varicose veins, kidney damage, stroke and heart attack. Memory loss, frequent headaches, dizzy spells and slowed mental response can also result.