Anti-Hypertensive Effect of a Solar Salt Diet in Elderly Hypertensive Patients: A Preliminary Randomized, Double-Blind Clinical Trial.
10.15384/kjhp.2015.15.3.98
- Author:
Seung Ha BAEK
1
;
Ju Won AHN
;
Hye Ree LEE
;
Soo Hyun CHO
;
Jung Ha KIM
Author Information
1. Department of Family Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea. girlpower219@cau.ac.kr
- Publication Type:Clinical Trial ; Randomized Controlled Trial ; Original Article
- Keywords:
Hypertension;
Blood pressure;
Aged;
Salt;
Randomized controlled trial
- MeSH:
Aged*;
Blood Pressure;
Diet*;
Humans;
Hypertension;
Korea;
Minerals;
Potassium;
Sodium
- From:Korean Journal of Health Promotion
2015;15(3):98-107
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: High sodium and/or low mineral intake are known to be associated with elevated blood pressure. It has been reported that substituting low-sodium, mineral-rich salt for refined salt lowers blood pressure (BP). And solar salt is emerging as a low sodium high mineral salt for a healthy diet in Korea. Therefore, this double-blind, randomized, and placebo-controlled trial was conducted to explore changes in BP from substituting refined salt with solar salt among hypertensive elderly subjects. METHODS: Forty-three hypertensive and institutionalized elderly individuals aged 65 years or older were enrolled. Thirty-eight subjects (88.4%) completed the study. Subjects were provided with either a solar salt- or refined salt-based diet for eight weeks. RESULTS: Systolic BP decreased significantly in the solar salt-based diet group after 2, 4, and 8 weeks when compared to the refined salt-based diet group. And, diastolic BP was lowered significantly in the solar salt-based diet group compared to that in the refined salt-based diet group after 8 weeks. In addition, urinary sodium/potassium, and angiotension converting enzyme activity decreased significantly in the solar salt-based diet group compared to the refined salt-based group. Urinary potassium excretion was significantly increased in the solar salt-based diet group. CONCLUSIONS: These results may provide clinical evidence that solar salt has beneficial effects on BP in elderly patients. And, people such as Koreans, who do not consume enough minerals, may experience a greater anti-hypotensive effect by using solar salt. However, further large-scale studies are necessary.
