Valve failure: The valves inside the veins help to return blood to the heart. When these valves become weak or damaged, blood flows backward and pools in the veins.
Age: As we age, the elasticity of the veins and valves decreases, which causes varicose veins.
Standing or sitting for long periods of time: People who stand for long periods of time (such as teachers and salespeople) have slower circulation in the legs and increased pressure in the veins.
Pregnancy: During pregnancy, the risk of varicose veins increases because the amount of blood in the body increases and the uterus puts pressure on the veins.
Being overweight: When you gain weight, the pressure on the veins increases.
Genetic factors: If someone in your family has varicose veins, you are more likely to have them.
Heredity and female gender: This condition is more common in women than men (hormonal fluctuations are a major cause).
