A person’s blood pressure changes 24 hours. If you’re a healthy person, your levels are lowest at night. However, there are people who have the opposite of this pattern. Your blood pressure rises at night rather than during the day.
Researchers at Uppsala University in Sweden recently published a study in the international journal’Hypertension’ that people with high blood pressure at night rather than during the day are at higher risk of developing Alzheimer’s.
The researchers hypothesized that night is a very important time for brain health, and that abnormal patterns of higher blood pressure at night could increase the risk of developing dementia.
The researchers measured blood pressure in Swedish men at the ages of 70 and 77, respectively, to identify patterns, and tracked them until the age of 95 to investigate the relationship with the risk of developing dementia. At this time, 997 people participated in the primary blood pressure measurement and 611 of them participated in the secondary measurement.
As a result of examining the incidence of dementia by reviewing the participants’ medical history, those with higher blood pressure at night were 1.64 times more likely to be diagnosed with dementia compared to those with normal blood pressure patterns. The risk of developing Alzheimer’s, the most common form of dementia, was 1.67 times higher.
The reason for these results is not yet clear, but the researchers explained that the brain’s ability to clean up waste products while sleeping is hampered by abnormal blood pressure patterns.
As a next step, the researchers plan to investigate whether taking antihypertensive drugs that lower blood pressure at night could lower the risk of developing Alzheimer’s.
In addition, he pointed out that “there is a limitation in that this study was obtained only for elderly men,” he added. “It is necessary to study women and people living in other countries.”
Reporter Jeong Hee-eun [email protected]
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