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FutureStarrWhat causes a stroke
Strokes are the leading cause of death in both men and women in the United States. Stroke risk factors can vary depending on age, class, and environment. Strokes are unlikely without any warning signs. Most strokes are caused by a blood clots in arteries.High blood pressure and aneurysms—balloon-like bulges in an artery that can stretch and burst—are examples of conditions that can cause a hemorrhagic stroke. A hemorrhagic stroke happens when an artery in the brain leaks blood or ruptures (breaks open). The leaked blood puts too much pressure on brain cells, which damages them.
A stroke occurs when a blood vessel in the brain ruptures and bleeds, or when there’s a blockage in the blood supply to the brain. The rupture or blockage prevents blood and oxygen from reaching the brain’s tissues. Hemorrhagic stroke is caused by either a burst or leaking blood vessel that seeps into the brain.A cerebral embolism (often referred to as embolic stroke) occurs when a blood clot forms in another part of the body — often the heart or arteries in the upper chest and neck — and moves through the bloodstream until it hits an artery too narrow to let it pass.During an ischemic stroke, the arteries supplying blood to the brain narrow or become blocked. Blood clots or severely reduced blow flow to the brain causes these blockages.
Pieces of plaque breaking off and blocking a blood vessel can also cause them. A hemorrhagic stroke happens when an artery in the brain breaks open or leaks blood. The blood from that artery creates excess pressure in the skull and swells the brain, damaging brain cells and tissues.An intracerebral hemorrhagic stroke is the most common type of hemorrhagic strokecan vary. They may occur because of either a direct injury to the brain during the stroke, or because abilities have been permanently affected.It happens when the tissues surrounding the brain fill with blood after an artery bursts. (Source:www.healthline.com)
A stroke happens when blood flow to a part of your brain is cut off. Without the oxygen in blood, brain cells start dying within minutes. To help prevent a stroke, learn about the causes and the things that can raise your odds of getting one. A stroke can happen in two main ways: Something blocks the flow of blood, or something causes bleeding in the Diabetes. People who have it often have high blood pressure and are more likely to be overweight. Both raise the chance of a stroke. Diabetes damages your blood vessels, which makes a stroke more likely. If you have a stroke when your blood sugar levels are high, the injury to your brain is greater.
Tobacco. Smoking or chewing it raises your odds of a stroke. Nicotine makes your blood pressure go up. Cigarette smoke causes a fatty buildup in your main neck artery. It also thickens your blood and makes it more likely to clot. Even secondhand smoke can affect you. Race. Strokes affect African-Americans and nonwhite Hispanic Americans much more often than any other group in the U.S. Sickle cell disease, a genetic condition that can narrow arteries and interrupt blood flow, is also more common in these groups and in people whose families came from the Mediterranean, the Middle East, or Asia. (Source:www.webmd.com)