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What causes varicose veins in pregnancy?

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Video Overview

What causes varicose veins in pregnancy? Part of the physiology behind the pregnancy is the blood volume doubles and there's an increase in hormones made by the placenta which causes the veins to dilate. Veins have thinner wall vessels than arteries and they also have valves. And those valves can break down and then blood tends to, instead of going towards to heart, it backs up down into the lower extremities and that causes venous hypertension. Pregnancy is the precursor to venous disease in many people.

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