Frequent fluctuations in blood pressure can negatively affect cognitive health and increase the risk of dementia, according to new research from Monash University. The study tracked the blood pressure of 225 Australians aged 55 to 80 over a 24-hour period using continuous monitoring devices. It found that even minor changes in blood pressure were linked to diminished cognitive performance, equivalent to an approximate increase in age of seven years. Higher average blood pressure levels throughout the day were associated with more significant vascular brain injury, which is linked to conditions such as dementia. Researchers noted that abnormal blood pressure could lead to changes in brain structure and function, emphasizing the need for ongoing blood pressure monitoring to better understand its implications for brain health.
Why It Matters
This study highlights the connection between cardiovascular health and cognitive function, particularly in midlife, a critical period for brain health. Historically, high blood pressure has been recognized as a major risk factor for cognitive decline, but this research expands that understanding to include the impact of blood pressure variability. Cognitive decline and dementia are significant public health concerns, affecting millions worldwide, with vascular injury being a common contributor to these conditions. Understanding the relationship between blood pressure patterns and brain health can inform preventive measures and treatment strategies, potentially reducing the incidence of dementia.
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