Intensive Blood Pressure Treatment Lowers Dementia Risk
Lowering High Blood Pressure May reduce Dementia Risk, Study Finds
Table of Contents
NEW YORK (AP) — Intensive treatment too lower high blood pressure, including medication and lifestyle adjustments, may significantly reduce the risk of dementia, according to a recent study.
The World Health Organization estimates that 57 million people globally were living with dementia in 2021. While often associated with aging,experts emphasize that dementia is not an inevitable part of growing older.
Preventing Dementia: Addressing key Risk Factors
Research suggests that nearly half of dementia cases could be prevented or delayed by targeting 14 modifiable risk factors. These include hearing impairment, smoking, obesity, excessive alcohol consumption, social isolation, and notably, high blood pressure.
The latest findings indicate that addressing high blood pressure could possibly lower dementia risk by 15%,researchers report.
Expert commentary
“Antihypertensive treatment can prevent dementia in patients with uncontrolled hypertension,” said Professor Jiang He of Southwestern Medical Center.”Given the high prevalence of uncontrolled hypertension worldwide, this effective intervention shoudl be widely adopted and extended to reduce the global dementia burden.”
Study Details
The study, published in Nature Medicine, involved 33,995 individuals aged 40 and older with uncontrolled hypertension across 326 rural Chinese villages. Researchers from China and the U.S. collaborated on the project.
The research team randomly selected 163 villages where 17,407 participants received intensive blood pressure management. This included access to free or low-cost medication, tailored dosages, health education to support medication adherence and lifestyle changes (weight loss, reduced alcohol and salt intake), and equipment for home blood pressure monitoring. These services were often delivered by community health providers, sometimes referred to as “village doctors.”
The remaining 163 villages, with 16,588 participants, received standard care, where blood pressure management occurred within their usual clinical settings. While lifestyle changes were recommended, and some participants took blood pressure-lowering medication, they did not receive free medication or at-home coaching.
Study Results
After four years, researchers found that 668 participants in the intensive blood pressure control group developed dementia, compared to 734 in the standard care group. This analysis suggests a 15% lower risk of dementia in the intensive treatment group. Further analysis indicated a 16% reduced risk of cognitive impairment, excluding dementia, in the same group.
The researchers acknowledged that cognitive function was not assessed at the studyS outset. However, they believe the similarity between the two groups minimizes the likelihood of skewed results.
Perspectives and future Research
Professor Joanna Wardlaw from the University of Edinburgh, who was not involved in the study, suggested that the research could not isolate the individual contributions of optimal blood pressure and lifestyle changes in reducing dementia risk, indicating a combined effect.
other experts suggest that future research should involve longer follow-up periods and be conducted in diverse countries.
Professor Tara Spiers-Jones, director of the Center for Discovery Brain sciences at the University of Edinburgh, stated that the research “offers additional solid evidence to support the importance of blood pressure and other cardiovascular risks to protect the brain during aging.”
However, Spiers-Jones cautioned, “It is vital to remember that the treatment of hypertension was not a safe guarantee, because some people receiving treatment have still developed dementia.”
Lowering High Blood Pressure and Dementia Risk: A Extensive Overview
This article explores the connection between high blood pressure management and the potential to reduce the risk of dementia, drawing insights from a recent study. It analyzes the study’s methodology, results, and expert commentary, providing a comprehensive understanding of the topic.
Can high blood pressure treatment reduce dementia risk?
Yes, according to a recent study, intensive treatment to lower high blood pressure, including medication and lifestyle adjustments, may significantly reduce the risk of dementia. The study found a 15% lower risk of dementia in participants receiving intensive blood pressure management compared to those receiving standard care.
What are modifiable risk factors for dementia?
Research suggests that nearly half of dementia cases could potentially be prevented or delayed by addressing modifiable risk factors. These include:
Hearing impairment
Smoking
Obesity
Excessive alcohol consumption
Social isolation
High blood pressure
What did the study involve?
The study,published in Nature medicine,involved 33,995 individuals aged 40 and older with uncontrolled hypertension across 326 rural Chinese villages.The research team from China and the U.S. collaborated on the project.
Intensive blood Pressure Management Group: 17,407 participants received free or low-cost medication, tailored dosages, health education to support medication adherence and lifestyle changes (weight loss, reduced alcohol and salt intake) and equipment for home blood pressure monitoring.
Standard Care Group: 16,588 participants received standard care within their usual clinical settings. Lifestyle changes were recommended, and some participants took blood pressure-lowering medication, but they did not receive free medication or at-home coaching.
What were the results of the study?
After four years, researchers found:
668 participants in the intensive blood pressure control group developed dementia.
734 participants in the standard care group developed dementia.
A 15% lower risk of dementia in the intensive treatment group.
A 16% reduced risk of cognitive impairment (excluding dementia) in the intensive treatment group.
What do experts say about the study?
Professor Jiang He from Southwestern Medical center stated, “Antihypertensive treatment can prevent dementia in patients with uncontrolled hypertension.”
Professor Tara Spiers-Jones, director of the Center for Discovery Brain Sciences at the University of Edinburgh, stated that the research “offers additional solid evidence to support the importance of blood pressure and other cardiovascular risks to protect the brain during aging.” However, she cautioned that “the treatment of hypertension was not a safe guarantee because some people receiving treatment have still developed dementia.”
Summary of Key Findings
| Feature | Intensive Blood Pressure Group | Standard Care Group |
| :————————– | :—————————————————————————————————————– | :————————————————————————————————— |
| Participants | 17,407 | 16,588 |
| Intervention | Free/low-cost medication, tailored dosages, education, lifestyle changes, home monitoring | Standard care, recommendations for lifestyle changes |
| Dementia Cases After 4 years | 668 | 734 |
| Dementia Risk Reduction | 15% lower risk | N/A |
| Cognitive Impairment Risk | 16% reduced risk (excluding dementia) | N/A |
What do future studies need to address?
Experts suggest that future research should:
Involve longer follow-up periods.
Be conducted in diverse countries to increase the generalizability of the findings.