Veins return blood from the remainder of the body to the center. To return blood to the heart, the veins in the legs must work in opposition to gravity. Weakened valves, also referred to as incompetent valves, inside the veins might lead to varicose veins. Most often, Mayo Clinic doesn't https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-answers-to-your-most-common-questions/