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Neurology. 2019 Apr 10. pii: 10.1212/WNL.0000000000007454. doi: 10.1212/WNL.0000000000007454. [Epub ahead of print]

Lipid levels and the risk of hemorrhagic stroke among women.

Author information

1
From the Division of Preventive Medicine, Department of Medicine (P.M. Rist, J.E.B., P.M Ridker), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; Department of Neurology (C.S.K.), Emory University, Atlanta, GA; Institute of Public Health (T.K.), Charité-Universitätsmedizin, Berlin, Germany; and Division of Women's Health, Department of Medicine (K.M.R.), Brigham and Women's Hospital, Boston, MA. prist@mail.harvard.edu.
2
From the Division of Preventive Medicine, Department of Medicine (P.M. Rist, J.E.B., P.M Ridker), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; Department of Neurology (C.S.K.), Emory University, Atlanta, GA; Institute of Public Health (T.K.), Charité-Universitätsmedizin, Berlin, Germany; and Division of Women's Health, Department of Medicine (K.M.R.), Brigham and Women's Hospital, Boston, MA.

Abstract

OBJECTIVE:

To examine the association between lipid levels and hemorrhagic stroke risk among women.

METHODS:

We performed a prospective cohort study among 27,937 women enrolled in the Women's Health Study with measured total cholesterol, low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C), as well as triglycerides. Strokes were confirmed by medical record review. We used Cox proportional hazards models to analyze associations between lipid categories and hemorrhagic stroke risk.

RESULTS:

During a mean of 19.3 years of follow-up, 137 hemorrhagic strokes occurred. Compared to those with LDL-C levels 100-129.9 mg/dL, after multivariable adjustment, those with LDL-C levels <70 mg/dL had 2.17 times the risk (95% confidence interval [CI] 1.05, 4.48) of experiencing a hemorrhagic stroke. No significant increase in risk was seen for those with LDL-C levels 130-159.9 mg/dL (relative risk [RR] 1.14; 95% CI 0.72, 1.80) or 70-99.9 mg/dL (RR 1.25; 95% CI 0.76, 2.04). There was a suggestion, although not significant, of increased risk for those with LDL-C levels ≥160 mg/dL (RR 1.53; 95% CI 0.92, 2.52). Women in the lowest quartile of triglycerides had a significantly increased risk of hemorrhagic stroke compared to women in the top quartile after multivariable adjustment (RR 2.00; 95% CI 1.18, 3.39). We observed no significant associations between total cholesterol or HDL-C levels and hemorrhagic stroke risk.

CONCLUSION:

LDL-C levels <70 mg/dL and low triglyceride levels were associated with increased risk of hemorrhagic stroke among women.

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