A recent study has issued a warning about the increased risk of dementia for individuals with untreated high blood pressure. Australian researchers conducted a study involving over 30,000 participants across 14 countries to examine the correlation between cognitive health and hypertension. The findings, published in Neurology, revealed that neglecting high blood pressure could elevate the risk of non-Alzheimer’s dementia by 68% and Alzheimer’s by 36% in individuals aged over 60.
Lead author Dr. Matthew Lennon, from Sydney’s St Vincent’s Hospital, emphasised the importance of blood pressure management in preventing dementia. He suggested that while some may consider reducing medication for chronic diseases in later life, the study highlights the benefits of maintaining blood pressure control to safeguard cognition and reduce dementia risk, even in old age. Dr. Lennon also underscored the significance of regular blood pressure monitoring for older individuals to support a healthy and fulfilling life.
It is essential to distinguish between dementia and Alzheimer’s, as dementia refers to a range of brain conditions including Huntington’s, vascular, and Lewy body dementia, while Alzheimer’s is the most common form characterised by progressive cognitive decline. The new research coincides with previous studies from the University of Oxford, linking type two diabetes, exacerbated by factors like obesity, smoking, alcohol consumption, and poor sleep, to an increased risk of dementia.
Dr. Lennon’s meta-analysis reinforced the association between blood pressure medication and a reduced risk of Alzheimer’s disease throughout life. Age, ethnicity, and dietary habits, especially high salt intake, can influence high blood pressure. Although high blood pressure often exhibits no symptoms, individuals should be alert to signs such as headaches, blurred vision, and chest discomfort. Medical evaluations are necessary for an accurate high blood pressure diagnosis.
If concerned about high blood pressure, consulting a GP or contacting NHS 111 for guidance is crucial. This research provides valuable insights into the proactive management of high blood pressure to mitigate the risks of dementia, emphasising the significance of preventive healthcare strategies for cognitive well-being.