dania wrote:I always maintained that venous insufficiency did not stop at the neck. I like how Dr Hubbard explains it is thru out the body. What happens with varicose veins is no different than what happens with the veins in the neck.
Cece wrote:In varicose veins, the valves weaken and stop closing altogether, so that they are ineffective at moving blood upwards. In CCSVI, valves are too thickened and do not let flow pass
The Mayo Clinic wrote:Arteries carry blood from your heart to the rest of your tissues. Veins return blood from the rest of your body to your heart, so the blood can be recirculated. To return blood to your heart, the veins in your legs must work against gravity. Muscle contractions in your lower legs act as pumps, and elastic vein walls help blood return to your heart. Tiny valves in your veins open as blood flows toward your heart then close to stop blood from flowing backward.
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