Question: why do aneurysms develop in our brain?

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  1. This is not my specialty, but aneurysms can occur in different parts of the body too, they are a bulging weak area in the wall of an artery and if they rupture they can cause a bleed in the brain, which damages the local brain cells.

    There is more information on brain aneurysms here:
    http://www.nhs.uk/conditions/aneurysm/Pages/Introduction.aspx

    It seems that the cause of them can be smoking, high blood pressure, as well as genetic predispositions.

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