The best way to help prevent a stroke is to eat a healthy diet, exercise regularly and avoid smoking and drinking too much alcohol.
These lifestyle changes can reduce your risk of problems such as atherosclerosis (where arteries become clogged up by fatty substances), high blood pressure and high cholesterol levels, all of which are important risk factors for strokes.
If you have already had a stroke, making these changes can help reduce your risk of having another one in the future.