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Recent developments concerning diet and hypertension
L J Beilin1, V Burke, I B Puddey
1University Department of Medicine, Royal Perth Hospital, University of Western Australia and HeartSearch WA, Perth, Western Australia, Australia. lbeilin@cyllene.uwa.edu.au
Clinical and Experimental Pharmacology & Physiology
|March 21, 2002
Summary
Dietary interventions significantly lower blood pressure, aiding hypertension management. Key trials like DASH and TONE highlight the impact of diet, weight control, and sodium restriction on blood pressure.
Area of Science:
- Cardiovascular Health
- Nutritional Science
- Preventive Medicine
Background:
- Dietary patterns and specific foods significantly impact blood pressure control.
- Randomized controlled trials demonstrate practical applications for individual and population blood pressure management.
- Non-pharmacological interventions are crucial for managing hypertension, especially in the elderly.
Purpose of the Study:
- To review recent evidence on the blood pressure-lowering effects of dietary interventions.
- To highlight key findings from significant randomized controlled dietary trials.
- To discuss the role of diet in hypertension management and identify areas for further research.
Main Methods:
- Review of recent randomized controlled dietary trials.
- Analysis of data from landmark studies such as the Dietary Approaches to Stop Hypertension (DASH) trials and the Trial of Nonpharmacologic Interventions in the Elderly (TONE).
- Inclusion of findings from Australian trials investigating dietary components in treated hypertensives.
Main Results:
- Dietary patterns and specific food components demonstrate significant blood pressure-lowering effects.
- The DASH and TONE trials confirmed the efficacy of complex dietary patterns, salt restriction, weight control, and sodium restriction.
- Additive benefits were observed with dietary fish, weight control, dietary protein, and fiber in treated hypertensive individuals.
- Regular coffee consumption was associated with increased blood pressure in older hypertensive individuals.
- Antihypertensive effects of dietary antioxidants warrant further investigation.
Conclusions:
- Dietary interventions are a practical and effective strategy for blood pressure control in both individuals and populations.
- Established trials provide strong evidence for the role of diet, weight management, and sodium intake in hypertension.
- Further research is needed to elucidate the role of dietary antioxidants in blood pressure regulation, while potential adverse effects of coffee consumption in hypertensives should be considered.