Veins return blood from the rest of the entire body to the heart. To return blood to the heart, the veins during the legs ought to perform towards gravity. Weakened valves, also known as incompetent valves, inside the veins may well cause varicose veins. Mayo Clinic will work with numerous https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-answers-to-your-most-common-questions/