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Varicose veins are abnormally enlarged, twisted blood vessels with valves that do not function properly. Normal veins channel blood back to the heart using one way valves. When the valves in the veins become abnormal, the blood tends to "pool" creating increased pressure on the vein walls. The increased pressure stretches the vein walls causing them to enlarge and twist to accommodate the increased blood volume. This gives the enlarged veins the appearance of blue, bumpy, rope-like veins that we know as varicose veins.
Are varicose veins preventable?