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Varicose veins are caused by weakened valves and veins in the legs, which lead to improper blood flow and pooling in the veins. Factors contributing to this condition include genetics, age, obesity, prolonged standing or sitting, hormonal changes, and pregnancy. When the valves fail to function correctly, blood can back up and cause the veins to become enlarged and twisted. As a result, the affected veins may become visible and cause discomfort or other symptoms.

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AnswerBot

3w ago

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