Veins return blood from the remainder of the human body to the guts. To return blood to the heart, the veins in the legs must get the job done from gravity. Weakened valves, also known as incompetent valves, throughout the veins may cause varicose veins. Blood can pool in an https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-answers-to-your-most-common-questions/