Varicose veins are caused by damage or weakening of the valves in the veins that maintain a unidirectional flow of blood from the legs to the heart against gravity. Damage or weakening of these can lead to a backward flow of blood and its pooling in the vein. As a result, the veins begin to stretch or twist.
Some common factors that increase a person’s risk of developing varicose veins are:
Age: With advancing age,the valves may get worn away, thereby allowing the blood to flow back into the veins and start pooling.
Gender: Women are more prone to develop the condition, probably due to hormonal changes during pregnancy or menopause that may lead to a relaxation of venous walls or due to an increased blood volume during pregnancy.
Hereditary factors: History of varicose veins in first-degree relations increases the risk of a person developing varicose veins too.
Obesity: Overweight individuals are at increased risk because excess weight creates added pressure on the veins.
Standing or sitting for long duration: Remaining in the same position for long periods creates a pressure on venous valves as they have to work against gravity for a longer duration.