Valve defects: The veins that carry blood from the legs back to the heart have valves to prevent blood from flowing back down. When these valves become weak, blood builds up in the veins and the veins swell.
Nature of work: Standing or sitting for long periods of time (for example, teachers, security guards) increases pressure on the veins.
Age: As you age, the elasticity of the veins decreases and the valves weaken.
Genetics: If close relatives in your family have varicose veins, you are more likely to get them.
Pregnancy: During pregnancy, the increased blood flow in the body and the weight of the uterus puts pressure on the veins in the pelvic area can cause varicose veins.
Obesity: Being overweight puts excessive pressure on the nerves in the legs.
More likely in women: Hormonal changes (especially during childbirth and menopause) can affect the nerves.
