Insomnia, hypertension and smoking, but not high triglyceride levels, are considered possible risk factors for brain aneurysm rupture.
From the article:
Data from several genome-wide association studies were used to gauge genetic associations to lifestyle and cardiometabolic risk factors. […] According to the analysis:
-A genetic predisposition for insomnia was associated with a 24% increased risk for intracranial aneurysm and aneurysmal subarachnoid hemorrhage.
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-The risk for intracranial aneurysm was about three times higher for smokers vs. non-smokers.
-The risk for intracranial aneurysm was almost three times higher for each 10 mm Hg increase in diastolic blood pressure (the bottom number in a blood pressure reading).
-High triglyceride levels and high BMI did not demonstrate an increased risk for intracranial aneurysm and aneurysmal subarachnoid hemorrhage.