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Effects of exercise, diet and weight loss on high blood pressure
Simon L Bacon1, Andrew Sherwood, Alan Hinderliter
1Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina 27710, USA.
Insights
Behavioral interventions like exercise and the DASH diet effectively lower high blood pressure (BP). Combined with weight loss, these strategies significantly reduce BP and improve cardiovascular health, offering an alternative to medication.
Area of Science:
- Cardiology
- Preventive Medicine
- Public Health
Background:
- High blood pressure (BP) affects over 50 million Americans, with inadequate BP control being a significant issue.
- Pharmacological treatments for hypertension are not universally effective and can cause adverse effects, necessitating alternative management strategies.
- Associated metabolic abnormalities like insulin resistance and hyperlipidemia may persist or worsen with certain antihypertensive medications.
Purpose of the Study:
- To evaluate the efficacy of behavioral interventions in managing high blood pressure.
- To assess the impact of exercise, the Dietary Approaches to Stop Hypertension (DASH) diet, and weight loss on blood pressure control.
- To explore the cardiovascular benefits associated with these lifestyle modifications.
Main Methods:
- Review of existing evidence on behavioral interventions for hypertension management.
- Analysis of studies examining the effects of exercise, DASH diet, and weight loss on systolic blood pressure (SBP) and diastolic blood pressure (DBP).
- Examination of the impact of combined interventions in overweight hypertensive patients.
Main Results:
- Exercise alone lowered SBP by ~3.5 mm Hg and DBP by ~2.0 mm Hg.
- The DASH diet reduced SBP by ~5.5 mm Hg and DBP by ~3.0 mm Hg compared to a standard diet.
- Weight loss of 8 kg decreased SBP by ~8.5 mm Hg and DBP by ~6.5 mm Hg. Combined exercise and weight loss in overweight patients reduced SBP by ~12.5 mm Hg and DBP by ~7.9 mm Hg.
Conclusions:
- Behavioral interventions, including exercise, the DASH diet, and weight loss, are effective in reducing high blood pressure.
- These lifestyle modifications are associated with significant improvements in cardiovascular health, including left ventricular structure and function, and vascular health.
- Behavioral interventions offer a valuable role in the comprehensive management of elevated blood pressure.
Abstract:
High blood pressure (BP) is a major health problem in the US, affecting more than 50 million people. Although high BP is among the most common reasons for outpatient visits, BP control is often inadequate. It is well established that BP can be lowered pharmacologically in hypertensive individuals; however, anti-hypertensive medications are not effective for everyone, and may be costly and result in adverse effects that impair quality of life and reduce adherence. Moreover, abnormalities associated with high BP, such as insulin resistance and hyperlipidaemia, may persist or may even be exacerbated by some anti-hypertensive medications. Consequently, there has been a great deal of interest in the development and application of behavioural interventions in the management of high BP. The main behavioural interventions that are recommended to reduce BP are exercise and the Dietary Approaches to Stop Hypertension (DASH) diet. Weight loss is also recommended for BP reduction in overweight individuals. Exercise alone is associated with reductions of approximately 3.5 and 2.0mm Hg in systolic (SBP) and diastolic blood pressure (DBP), respectively. Patients fed a DASH diet (a diet high in low-fat dairy products and fibre, including fruits and vegetables) had reductions in SBP and DBP of 5.5 and 3.0mm Hg, respectively, compared with those consuming a standard US diet. Reductions of approximately 8.5mm Hg SBP and 6.5mm Hg DBP accompany weight loss of 8 kg. In overweight hypertensive patients, a combined exercise and weight-loss intervention has been shown to decrease SBP and DBP by 12.5 and 7.9 mm Hg, respectively. There is evidence to suggest that these decreases in BP are associated with improvements in left ventricular structure and function, and peripheral vascular health. Both exercise training and weight loss have been shown to decrease left ventricular mass and wall thickness, reduce arterial stiffness and improve endothelial function. These data support the role of behavioural interventions in the treatment of patients with elevations in BP.
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