Treating Malignant Hypertension With the Low-Sodium, Low-Protein, and Low-Fat Rice Diet.

Area of Science:

• Cardiovascular Medicine
• Nutritional Science
• Hypertension Research

Background:

• The rice diet (RD), a very low-sodium, low-protein, and low-fat diet, was historically used to manage malignant hypertension before effective drugs were available.
• Malignant hypertension is a severe form of high blood pressure characterized by significant BP elevation and target organ damage.

Purpose of the Study:

• To retrospectively analyze the effectiveness of the rice diet in lowering blood pressure in patients diagnosed with malignant hypertension.
• To identify factors, such as dietary adherence, associated with blood pressure reduction in this patient cohort.

Main Methods:

• Retrospective analysis of 544 malignant hypertension patients from 17,487 rice diet charts.
• Exclusion criteria included diabetes, brain tumors, or prior sympathectomy.
• Blood pressure changes and dietary adherence (assessed by urinary chloride) were evaluated over 4 weeks.

Main Results:

• Median baseline blood pressure was 213/128 mm Hg; blood pressure significantly decreased to 179/108 mm Hg by week 4.
• Urinary chloride levels dropped substantially, indicating adherence to the diet.
• Lower urinary chloride, higher baseline blood pressure, and female sex were associated with greater systolic blood pressure reduction.

Conclusions:

• The rice diet is an effective intervention for rapidly lowering blood pressure in patients with malignant hypertension.
• Dietary adherence, as measured by urinary chloride, plays a crucial role in the diet's efficacy.
• The blood pressure-lowering effects of the rice diet were observed independently of concurrent antihypertensive medications.