- In the short term, smoking thickens the blood and drives up blood pressure, both of which can raise the risk of a brain bleed, said the researchers.
- But smoking also led to permanent changes to the structure of artery walls which may be more pronounced in heavy smokers.
- Previous long term research has indicated that the risk of an aneurysm in former smokers disappears after 10 to 15 years.
- However, these studies were considered too limited or small to draw reliable conclusions.
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