Varicose veins are fairly common, affecting about 25% of adults. Your veins help keep blood moving back up toward the heart. If the inside valves are weak, blood can flow back to the veins, resulting in varicose veins.
https://www.usaveinclinics.com/blog/is-vein-ablation-painful-a-closer-look-at-this-treatment-for-varicose-veins/
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