* Increased Blood volume
* Hormones causing the vein wall to relax
* Pressure on the large abdominal veins (due to the growing baby!)
* Family history of Varicose Veins
All veins have valves inside them. These valves are meant to be one-way valves, opening to allow blood to flow up and then closing to prevent blood flow down again. In pregnancy, due to the reasons outlined above, it is common for the valves in the veins to stop working efficiently. This is called vein incompetence. Wearing
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