Varicose veins mostly appear on the legs. That’s because our legs pump blood against gravity to the heart. So if there is additional pressure on the veins or legs (such as excess weight), there will be slowness in the flow of blood, thus causing buildup. In turn, the blood veins become large, twisted and weak, resulting in what is known as varicose veins. Varicose veins occur when there is an additional pressure in the veins or when the veins become weakened. Varicose veins may come about as a result of: blood clots weight gain pregnancy prolonged standing injury insufficient Continue Reading