High blood pressure, also known as hypertension, is very common in older adults. Many people think of it mainly as a risk for heart attacks or strokes. However, new research suggests that it may also affect brain health in a serious way.
A new study has found that people over the age of 60 who have untreated high blood pressure may have a higher risk of developing Alzheimer’s disease.
Alzheimer’s is the most common form of dementia and causes problems with memory, thinking, and daily activities. It develops slowly over time and can greatly affect a person’s quality of life.
The study, published in the journal Neurology, does not prove that high blood pressure directly causes Alzheimer’s disease.
However, it shows a clear link between the two. This means that people with untreated high blood pressure were more likely to develop Alzheimer’s compared to those who were treating it or those who did not have high blood pressure.
The research was led by Dr. Matthew J. Lennon from the University of New South Wales in Australia. He explained that high blood pressure is already known to damage blood vessels and increase the risk of strokes and other brain-related conditions. Because of this, it makes sense that it may also affect long-term brain health.
To better understand this link, the researchers carried out a large study that included 31,250 people from 14 countries, such as Australia, Brazil, China, and the United States. The participants had an average age of 72 and were followed for about four years.
During this time, 1,415 participants developed Alzheimer’s disease. The researchers looked closely at each person’s blood pressure and whether they were taking medication to control it.
They found that about 9% of participants had high blood pressure that was not treated. Around 51% were taking medication to manage their blood pressure, while 36% did not have high blood pressure at all. A small group of about 4% had unclear information.
After taking into account factors such as age, gender, and education level, the researchers found that people with untreated high blood pressure had a 36% higher risk of developing Alzheimer’s compared to those without high blood pressure.
Even more importantly, people who were not taking medication had a 42% higher risk compared to those who were managing their blood pressure with treatment. This suggests that treating high blood pressure may help reduce the risk of Alzheimer’s.
These findings highlight the importance of not ignoring high blood pressure, even in older age. Some people believe that treating blood pressure is less important as they get older, but this study suggests that it can still make a meaningful difference.
It is also important to understand that this study has some limitations. For example, the way high blood pressure was defined was not exactly the same in every country involved in the research.
This could lead to some differences in how patients were classified. Despite this, the overall results still point to a strong link between untreated high blood pressure and a higher risk of Alzheimer’s disease.
Managing high blood pressure is something that can often be done with a combination of medication and lifestyle changes. Eating a healthy diet, reducing salt intake, staying physically active, and maintaining a healthy weight can all help keep blood pressure under control.
Regular check-ups are also important because high blood pressure often has no clear symptoms. Many people do not know they have it until it has already caused damage.
This study adds to growing evidence that taking care of heart health is also important for brain health. By managing blood pressure, people may not only protect their heart but also reduce their risk of memory problems later in life.
The research was supported by the National Health and Medical Research Council in Australia and the U.S. National Institute on Aging. It offers an important reminder that simple steps, such as taking prescribed medication and monitoring blood pressure, can have long-term benefits for both the body and the brain.
If you care about brain health, please read studies about vitamin D deficiency linked to Alzheimer’s and vascular dementia, and blood pressure problem at night may increase Alzheimer’s risk.
For more information about brain health, please see recent studies about antioxidants that could help reduce dementia risk, and epilepsy drug may help treat Alzheimer’s disease.
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