|What should a bystander do?|
If you think someone is having a stroke, you should call 9–1–1 or emergency medical services right away.
Why is there a need to act fast?
Death or permanent disability can result from a stroke. With timely treatment, however, the risk of death and disability from stroke can be lowered. It is very important to know the symptoms of a stroke and act right away.
What are the risk factors for stroke?
Some conditions as well as some lifestyle factors can put people at a higher risk for stroke. The most important risk factors for stroke are high blood pressure, heart disease, diabetes, and cigarette smoking. Persons who have already had a stroke need to control the risk factors in order to lower their risk of having another stroke. All persons can take steps to lower their risk for stroke. For more information about these risk factors, please see our Risk Factors section.
What can you do to reduce your risk of stroke?
All persons can take steps to lower their risk of stroke by maintaining normal blood pressure levels or controlling high blood pressure, preventing or treating heart disease and stroke, and by not using tobacco.