What Is a Subarachnoid Hemorrhage?
2. Risk Factors
Evidence for the heritability of brain aneurysms comes from families with multiple members affected. However, researchers have not been able to pinpoint a specific gene as being responsible. They also have discovered that alleles thought to protect from ischemic stroke somehow increase the risk of having a hemorrhagic stroke instead.
High blood pressure, smoking, and low body mass all increase risk of SAH, as does the use of cocaine, methamphetamine, or excessive amounts of alcohol. Dietary choices associated with SAH include eating fruit less than once per week and chicken fat or skin more than four times per week.
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