This is a condition where the valves in the blood vessels become weak and the blood does not return to the heart properly, causing the veins to become swollen in the legs. The main causes of this are:
Working for long periods of time: People who have to stand for long periods of time, such as teachers, security guards, traffic police, and nurses, are more likely to develop varicose veins. This is because the veins in the legs experience excessive pressure while standing.
Lack of exercise and obesity: When you gain weight, there is a lot of pressure on the blood vessels in the legs. In those who are reluctant to walk or do other exercises, blood flow slows down and the veins thicken.
Hormonal changes and pregnancy: During pregnancy, the increase in blood volume in the body and changes in hormones can cause blood vessels to dilate. In addition, the uterus puts pressure on the veins in the legs, which leads to varicose veins.
Age: As we age, the elasticity of blood vessels decreases and the valves inside them weaken. This causes blood to flow in the opposite direction and the veins to thicken.
Heredity: If someone in the family has varicose veins, the risk of others developing them is higher. This is exacerbated by the weakening of the blood vessel walls due to genetic factors.