What Are Varicose Veins?
The veins throughout your body carry blood from the capillaries in your body to your heart. In your legs, this means the blood has to flow upward against gravity. These leg veins have one-way valves to prevent blood from back flowing but sometimes these valves can fail and close too tightly.
This results in what is known as “reflux,” a process that allows blood to pool and congests the leg veins with blood. These bulging and twisting veins are called varicose veins.