From San Francisco, at the International Stroke Conference
A heightened risk of having a brain aneurysm seems to be passed down in some families, and the life-threatening rupture of an aneurysm appears to strike earlier in a succeeding generation, a study finds.
An aneurysm is a ballooning of a blood vessel associated with weakening of the vessel's walls. While most brain aneurysms never rupture, those that do cause a bleeding stroke and are fatal up to 50 percent of the time.
Past research has shown that about 10 percent of people who develop a brain aneurysm have a relative who has one, a significantly higher proportion than among people in general, says Daniel Woo, a neurologist at the University of Cincinnati.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.