You're so Vein..: Genetics determines the number of veins you own. The appearance of these veins can change due to various circumstances. Aging, the thickness of skin, muscular development, weakened valves in the veins and even frequencies of the light spectrum can have an effect on the appearance of your veins.
Answered 10/30/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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