@sciepro: 🩸 What Causes Varicose Veins? 🩸 Veins in the lower legs can twist and enlarge due to blood pooling from weakened valves. Watch our 3D breakdown! #VaricoseVeins #VascularHealth #SciePro #EduTikTok #science #meded #sciart #medstudent #anatomy #education #health #medical #vray #autodesk