Varicose veins are a condition, which is very unhealthy to have. The basic function of the veins in a human body is to carry impure blood to the heart, where it gets purified, and is then sent to the cells of the body. Thus, in that sense, the veins operate in just one way and the valves in it prevent the impure blood from going back to the cells. But sometimes, these valves fail to do so, and as a result, the veins get enlarged, causing the reverse flow of the impure blood. This is the condition which is known as varicose veins. It can ...