Hypertensive disorders in pregnancy and cognitive decline in the offspring up to old age
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Abstract
Objective: We tested whether maternal hypertensive disorders in pregnancy predict age-related change in cognitive ability in the offspring up to old age.
Methods: Using mothers' blood pressure and urinary protein measurements from the maternity clinics and birth hospitals, we defined normotensive or hypertensive pregnancies in mothers of 398 men, who participated in the Helsinki Birth Cohort 1934–1944 Study. The men underwent the Finnish Defence Forces basic ability test twice: first during compulsory military service at age 20.1 (SD = 1.4) years and then in a retest at age 68.5 (SD = 2.9) years. The test yields a total score and subscores for tests measuring verbal, arithmetic, and visuospatial reasoning.
Results: Men born after pregnancies complicated by a hypertensive disorder, compared with men born after normotensive pregnancies, scored 4.36 (95% confidence interval, 1.17–7.55) points lower on total cognitive ability at 68.5 years and displayed a greater decline in total cognitive ability (2.88; 95% confidence interval, 0.07–5.06) after 20.1 years. Of the subscores, associations were strongest for arithmetic reasoning.
Conclusion: Maternal hypertensive disorders in pregnancy predict lower cognitive ability and greater cognitive decline up to old age. A propensity to lower cognitive ability and decline up to old age may have prenatal origins.
GLOSSARY
- CHD=
- coronary heart disease;
- HBCS=
- Helsinki Birth Cohort Study
Footnotes
Study funding: Supported by grants from the Academy of Finland, European Science Foundation (EuroSTRESS), University of Helsinki, the British Heart Foundation, the Finnish Foundation of Cardiovascular Research, the Finnish Diabetes Research Foundation, the Finnish Medical Society (Duodecim), Finska Läkaresällskapet, the National Doctoral Programme of Psychology, the Päivikki and Sakari Sohlberg Foundation, the Juho Vainio Foundation, the Yrjö Jahnsson Foundation, the Signe and Ane Gyllenberg Foundation, the Jalmari and Rauha Ahokas Foundation, the Emil Aaltonen Foundation, the Finnish Ministry of Education, and the Finnish Foundation for Paediatric Research.
Supplemental data at www.neurology.org
- Received January 30, 2012.
- Accepted May 24, 2012.
- Copyright © 2012 by AAN Enterprises, Inc.
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