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Miia Kivipelto a Department of
Neuroscience and Neurology, University of Kuopio, PO Box 1627, 70211 Kuopio, Finland, b Department
of Public Health and General Practice, University of Kuopio, c Department of Clinical Radiology,
Kuopio University Hospital, PO Box 1777, 70211, Kuopio, Finland, d Department of Neurology, Kuopio University Hospital, e North Karelia Central
Hospital, 80210 Joensuu, Finland, f National Public Health
Institute, 00300 Helsinki, Finland
Correspondence to: M Kivipelto
miia.kivipelto{at}uku.fi
Objective:
To examine the relation of midlife
raised blood pressure and serum cholesterol concentrations to
Alzheimer's disease in later life.
What is already known on this topic
What this study adds
Design:
Prospective, population based study.
Setting:
Populations of Kuopio and Joensuu, eastern Finland.
Participants:
Participants were derived from random,
population based samples previously studied in a survey carried out in
1972, 1977, 1982, or 1987. After an average of 21 years' follow up, a
total of 1449 (73%) participants aged 65-79 took part in the re-examination in 1998.
Main outcome measures:
Midlife blood pressure and
cholesterol concentrations and development of Alzheimer's disease in
later life.
Results:
People with raised systolic blood
pressure (
160 mm Hg) or high serum cholesterol concentration (
6.5
mmol/l) in midlife had a significantly higher risk of Alzheimer's
disease in later life, even after adjustment for age, body mass index, education, vascular events, smoking status, and alcohol consumption, than those with normal systolic blood pressure (odds ratio 2.3, 95%
confidence interval 1.0 to 5.5) or serum cholesterol (odds ratio 2.1, 1.0 to 4.4). Participants with both of these risk factors in midlife
had a significantly higher risk of developing Alzheimer's disease than
those with either of the risk factors alone (odds ratio 3.5, 1.6 to
7.9). Diastolic blood pressure in midlife had no significant effect on
the risk of Alzheimer's disease.
Conclusion:
Raised systolic blood pressure and
high serum cholesterol concentration, and in particular the combination
of these risks, in midlife increase the risk of Alzheimer's disease in
later life.
Vascular risk factors may play an important part as risk factors for
Alzheimer's disease
Raised systolic blood pressure and high serum cholesterol
concentration, and in particular the combination of these risks, in
midlife increased the risk of Alzheimer's disease in later
life
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