What Causes Varicose Veins?
Your veins and arteries are part of your circulatory system. Arteries pump blood around your body. Once oxygen and nutrients are delivered, your blood flows into your veins, some of which are just below the skin.
The forward flow of blood is ensured through:
- One way valves in the veins, preventing back flow
- Your calf muscles squeezing the blood toward your heart when you move about
- Your arteries transmitting energy to the veins to propel blood towards the heart
- Elasticity, veins stretch and contract to help with upward blood flow
Varicose veins develop when:
- Your veins walls become weak and lose their elasticity
- The valves in your veins become ineffective, leading to backward flow of blood
- Rarely, when the larger veins closer to your heart are obstructed or fail
When this happens, blood pools in those veins making them varicose.