Weak or ruined valves may result in varicose veins. Arteries carry blood from the guts to the remainder of the body. Veins return blood from the rest of the overall body to the center. To return blood to the heart, the veins while in the legs should operate in opposition https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-from-the-perspective-of-a-vascular-surgeon/