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What causes spider veins?

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What causes spider veins? Spider veins are incredibly common; there are millions and millions of people in this country that get spider veins. In fact, a national survey found that at least 30% of adults have spider veins. Spider veins are also common on the face, when they're on the face the most common cause tends to be sun damage and things like rosacea. On the legs, probably the most common cause would be genetic predisposition. Pregnancy is a common cause and for a number of reasons, but the biggest one is the hormonal effect during pregnancy on the vein and the vein wall. There are other causes which can include injuries, prolonged standing, and just getting older. Because those are the causes there's not a lot one can do preventatively, but I think maintaining good fitness, being active aerobically, if you're going to be sitting for a long time on a long travel maybe wearing some compression stockings might be preventative things that you might consider.

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