"If you have ropy, blue blood vessels in your legs, you may think that they’re unsightly but don't cause any overt symptoms. Yet for some people, varicose veins can cause skin damage and, even worse, lead to dangerous blood clots.
They’re incredibly common: Varicose veins affect about one in four U.S. adults, or about 22 million women and 11 million men between ages 40 and 80.
Your leg veins face an uphill battle as they carry blood from your toes to your heart. Small flaps, or valves, within these vessels prevent blood from getting backed up on this journey, and the pumping action of your leg muscles helps push the blood along."
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