In the body, 20% of the blood volume pumped by the heart goes to the brain. The vein coming out of the heart first feeds the brain and then gives blood to the other organs of the body. Therefore, when blood flow from the heart starts, the probability of a clot going to the brain first is always high.
The clot going to the brain does not only come from the heart, but also the brain veins age as we age, and a process called atherosclerosis occurs. This can create clots on the vein, and these clots go to the brain. Let’s think of the main vein coming out of the heart as a tree root. Let the end branches of the tree be small veins, and clots can come out of the root and cause blockages on the way. If the branches are blocked, the brain’s nutrition is disrupted, if the small vein is blocked, it causes less damage, if the large vein is blocked, it causes more serious damage. These vein branches coming out of the heart narrow by going deeper into the brain. The larger the clot, the earlier it blocks the vein and the more damage it causes. Stroke is a condition that occurs suddenly and results in loss of brain functions.