Influence of long-term consumption of edible rich-potassium low-sodium salt on salt intake in gerocomium population
Wang Xiaoyun
Li Weiwei
Li Dongfeng
Guo Yu
Zhang Buqiang
Zhao Jinguo
Dong Yuehong
Liu Yongjuan
Yu Qin
Zhang Hongye
Liu Lisheng
Abstract：Objective To discuss the influence of long-term consumption of rich-potassium low-sodium salt on salt intake in gerocomium population.Methods The gerocomiums (n=31) were chosen from 8 areas in 4 provinces (Hebei, Inner Mongolia, Shanxi and Shandong) and Beijing from Nov. 2011 to Sept. 2012, and then they were divided, taking area and gerocomium as a unit, into control group and intervention group by using random cluster method. The intervention group was given edible rich-potassium low-sodium salt (KCl:NaCl=1:1), and control group was given general edible salt. Health education about the benefit of salt restriction for lowering blood pressure was provided to chosen population and gerocomium staff. The gerocomium staff was given questionnaire for calculating average salt intake per person per day at baseline and during following up from 24 months to 31 months and for 48 months. The random spot urine was collected at baseline and after 48 months for detecting electrolytes and calculating ratio of urine sodium and potassium.Results The average salt intake per person per day was (12.86±4.80) g in control group and (12.58±2.85) g in intervention group at baseline. The questionnaire data was complete in 1211 cases, and 497 in control group and 714 in intervention group during following up from 24 months to 31 months. After following up for 48 months, the questionnaire data was complete in 2153 cases, and 1118 in control group and 1035 in intervention group. The average salt intake per person per day decreased significantly in intervention group during follow-up period compared with that at baseline (all P<0.05). The average salt intake per person per day decreased significantly in intervention group during follow-up period compared with that in control group (all P<0.05). At baseline, the random ratio of urine sodium and potassium was (7.86±4.43) in control group (n=1309) and (8.22±4.92) in intervention group (n=933). During 48-month follow-up period, the random ratio of urine sodium and potassium was (4.21±2.27 in control group (n=497) and (2.46±1.71) in intervention group (n=714,P<0.05). The random ratio of urine sodium and potassium decreased significantly in 2 groups after following up for 48 months compared with that at baseline (all P<0.05). The random ratio of urine sodium and potassium decreased in intervention group compared with control group (4.21±2.27)vs. (2.46±1.71) during 48-month follow-up period (P<0.05).Conclusion The long-term consumption of rich-potassium low-sodium salt is an effective way for restricting salt intake in gerocomium population. It is required further study to verify the conclusion as the number of people changed a lot in this study.
Keywords：Rich-potassium low-sodium saltGerocomium populationRatio of sodium and potassiumSalt restriction
Publication Date：2017-01-01
Pages：3( 822-824 )