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Stroke Risk Factors & Alzheimer's Disease - DementiaGuide.com
   
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Types of Dementia

Stroke

StrokeA "stroke" is said to occur when a person has a sudden interruption of the blood supply to a part of the brain and the brain tissue being supplied by that blood dies. This may leave the person unable to move one or more limbs, unable to understand or formulate speech and/or unable to see one side of the visual field.

Strokes have many causes, but generally are either: 1) schemic - where there is decreased blood supply to part of the brain, or 2): hemorrhagic - where there is an accumulation of blood within the skull. In older persons, the most common cause is a blood clot in the brain or the neck. Clots that block blood supply to large arteries often result in noticeable signs, such as paralysis . Often, however, especially when stroke occurs from blockages from very small vessels, the only signs are that someone has problems with thinking, language or behaviour.

Interestingly, many risk factors for stroke (such as high blood pressure or high cholesterol ) also seem to be risk factors for Alzheimer's disease . Other risk factors include: advanced age, previous stroke, cigarette smoking, diabetes, and atrial fibrillation.

For more information, please visit the American Stroke Association or the Canadian Heart and Stroke Foundation.

Rockwood & MacKnight, 2001. p 13

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Last updated July 19, 2017
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