Healthy Eating Over Time Impacts Aging Well and Heart Health: Long-term Study

Jenn Hoskins
19th May, 2025

Healthy Eating Over Time Impacts Aging Well and Heart Health: Long-term Study
Image Source: Khanh Nguyen (photographer)

Key Findings

  • The Luxembourg Institute of Health studied Canadian adults and found that following a Mediterranean diet helps lower blood pressure
  • Each step up in the Mediterranean diet score was linked to smaller blood pressure numbers over nine years
  • Maintaining a healthy diet long-term is more effective for blood pressure control than short-term changes
Hypertension, commonly known as high blood pressure, is a significant health concern, especially among older adults. It increases the risk of developing cardiovascular diseases (CVD) such as ischemic heart disease and stroke, which are leading causes of morbidity and mortality worldwide[2][3]. Effective management of hypertension is crucial for reducing these risks and promoting healthy aging. A recent study conducted by the Luxembourg Institute of Health[1] explored the relationship between diet quality and blood pressure in adults aged 45 to 85 years. This research is part of the Canadian Longitudinal Study on Aging (CLSA), which tracks various health metrics over time to understand their impact on aging populations. The study focused on the Mediterranean diet score (MDS), a measure of diet quality based on adherence to the Mediterranean diet, which is rich in fruits, vegetables, whole grains, and healthy fats. Participants in the study were followed for up to nine years, with their blood pressure measurements (BPMs) recorded at three different points: baseline in 2010, first follow-up in 2015, and second follow-up in 2018. The researchers used several statistical models to analyze the data, including linear regression models and latent change score models, adjusting for factors that could influence the results, such as age, gender, physical activity, and other health conditions. The findings revealed a significant inverse relationship between diet quality and blood pressure. Specifically, for each one-unit increase in the Mediterranean diet score, there was an associated decrease of approximately 0.05 to 0.09 mmHg in both systolic and diastolic blood pressure, as well as mean arterial pressure. This means that better adherence to a Mediterranean-style diet was linked to lower blood pressure readings over time. However, changes in diet quality during the follow-up periods did not show consistent significant associations with blood pressure, highlighting the importance of long-term dietary habits rather than short-term changes. These results align with previous research indicating the critical role of diet in managing hypertension and reducing the risk of cardiovascular diseases. For instance, a study in Luxembourg found that nearly 31% of residents were hypertensive, with many unaware of their condition or not adequately managing it[4]. This underscores the need for effective dietary interventions as a public health strategy to combat hypertension and its related health issues. Furthermore, the study adds to the understanding of how lifestyle factors contribute to cardiovascular health. High blood pressure has been identified as a leading risk factor for ischemic heart disease and stroke, conditions that are projected to increase globally due to aging populations and economic disparities[2][3]. By demonstrating that diet quality can significantly impact blood pressure, the study suggests that promoting healthier eating habits could be a viable approach to mitigating the rising burden of cardiovascular diseases. Additionally, the research highlights the importance of early and sustained dietary interventions. Previous studies have shown that antecedent blood pressure levels, or past blood pressure measurements, can influence the risk of future strokes[5]. By maintaining a high-quality diet that supports lower blood pressure, individuals may reduce their long-term risk of stroke and other cardiovascular events. The Luxembourg Institute of Health’s study utilized robust data from the CLSA, ensuring that the findings are reliable and applicable to a broad population. The use of longitudinal data allowed researchers to observe changes and trends over time, providing valuable insights into the long-term effects of diet on blood pressure. This comprehensive approach helps in formulating targeted dietary recommendations and public health policies aimed at promoting healthy aging and reducing the prevalence of hypertension-related diseases. In summary, the study from the Luxembourg Institute of Health reinforces the crucial role of diet in managing blood pressure and preventing cardiovascular diseases. By demonstrating a clear link between higher Mediterranean diet scores and lower blood pressure, the research provides evidence for the effectiveness of dietary interventions in promoting heart health and healthy aging. As the global burden of hypertension and cardiovascular diseases continues to rise, such findings are essential for guiding public health strategies and individual lifestyle choices towards better health outcomes.

NutritionHealthFitness And Diet

References

Main Study

1) Longitudinal effects of diet quality on healthy aging - Focus on cardiometabolic health: findings from the Canadian longitudinal study on aging (CLSA)

Published 16th May, 2025

https://doi.org/10.1007/s40520-025-03058-9

Related Studies

2) Global Burden of Ischemic Heart Disease from 2022 to 2050: Projections of Incidence, Prevalence, Deaths, and Disability-Adjusted Life Years.

https://doi.org/10.1093/ehjqcco/qcae049

3) Global burden of cardiovascular diseases: projections from 2025 to 2050.

https://doi.org/10.1093/eurjpc/zwae281

4) Hypertension burden in Luxembourg: Individual risk factors and geographic variations, 2013 to 2015 European Health Examination Survey.

https://doi.org/10.1097/MD.0000000000004758

5) Elevated midlife blood pressure increases stroke risk in elderly persons: the Framingham Study.

Journal: Archives of internal medicine, Issue: Vol 161, Issue 19, Oct 2001


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