The Damage Of Veins

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Veins carry the blood towards the heart, which can be against gravity when standing upright. The backflow of blood is prevented by one-way valves. Superficial veins are linked to the deep veins by communicating vessels.
When a person walks the calf muscles contract the deep veins of the leg thus reducing the pressure in the superficial veins.
Damage to veins occur when standing still for long periods which causes the weight of the static column of blood to balloon the walls of the superficial veins which in turn causes damage to the valves, the result of this can cause the superficial veins to become gnarled, enlarged and prominent.
Tendency for veins to become varicose can be standing still for long periods, pregnancy and advancing age. In

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