Boosting Brain Health May Lower Hypertension Risk
A recent study reveals a fascinating connection between cognitive function and future hypertension risk. Researchers found that adults without hypertension at the start of the study who had better cognitive function were less likely to develop hypertension over the next six years. Interestingly, obesity played a role in this relationship, acting as a partial mediator.
The study, led by Gabriela Trifan from the University of Illinois in Chicago, analyzed data from a large group of Hispanic or Latino adults without hypertension. The participants, with a median age of 53, underwent four neurocognitive tests assessing learning, memory, executive function, and processing speed. These tests helped create a global cognitive score.
Over the course of the study, 57% of adults developed hypertension. The key finding was that each 1-standard deviation increase in the global cognitive score was associated with a 15% lower risk of developing hypertension. This translates to a significant absolute risk reduction of 1.9%.
Obesity emerged as the primary factor influencing this relationship, with an indirect adjusted odds ratio (aOR) of 0.95. In contrast, smoking and low physical activity did not significantly mediate the link between cognitive function and hypertension risk. Interestingly, a poor diet was associated with a higher risk of hypertension but did not act as a mediator.
Among the various cognitive domains, word fluency, which reflects executive function, was the only one significantly linked to the risk of developing hypertension, with an aOR of 0.90.
The researchers emphasize that while the individual impact of cognitive function on hypertension risk is modest, improving cognitive health could have a substantial impact at the population level. They suggest that interventions focusing on enhancing executive function, improving health literacy, or providing behavioral reinforcement could help reduce the risk of hypertension in cognitively vulnerable populations.
However, the study has its limitations. Many covariates were self-reported, which may have introduced recall bias. Additionally, the results might have been different if more than four cognitive tests were included. As an observational study, the researchers could not establish cause-and-effect relationships between cognition and hypertension.
This study, published in Hypertension, highlights the importance of maintaining and improving cognitive health to potentially lower the risk of hypertension. It invites further exploration of interventions that could benefit cognitively vulnerable populations.
