Does dehydration cause blockage in a vein or artery?

Dehydration does not directly cause blockage in a vein or artery. However, severe dehydration can lead to a decrease in blood volume, which can cause a drop in blood pressure and a reduction in blood flow to the body's organs and tissues. This can put stress on the heart and blood vessels and may increase the risk of developing blood clots. Blood clots can block arteries or veins, leading to serious conditions such as heart attack, stroke, or deep vein thrombosis (DVT).

Therefore, while dehydration does not directly cause blockage in a vein or artery, it can contribute to conditions that increase the risk of blood clots and blockages. Maintaining adequate hydration is important for overall health and can help reduce the risk of cardiovascular problems.