An aneurysm can develop in the human brain and remain a-symptomatic for a lifetime. What percentage of people have a brain aneurysm already, but don't know it? (poll 3925642)

An aneurysm can develop in the human brain and remain a-symptomatic for a lifetime. What percentage of people have a brain aneurysm already, but don't know it?

10%

7.5%

5.25%

I don't know...{**Correct answer appears at bottom of this page - **Every 2nd Day**}

Other:

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