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Meng D, Cobb LK, Ide N, Ge Z. The availability, price, and characteristics of low sodium salt based on an online salt market survey in China: Implications for scaling up its use. J Clin Hypertens (Greenwich) 2023; 25:1079-1085. [PMID: 37864815 PMCID: PMC10710556 DOI: 10.1111/jch.14741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/23/2023]
Abstract
Low sodium salt (LSS) is an effective way to reduce the primary source of sodium from home cooking. To investigate the availability, price and characteristics of LSS, price gap between LSS and regular salt, and the potential size of subsidy needed to equalize the price of LSS and regular salt. A market survey of salts was conducted using two major online shopping sites JD and Taobao from November to December 2022. Of 360 salts, 76 (21.1%) are LSS and 284 (78.9%) are regular salt. The average proportion of potassium chloride is low (16.8%), and half of the brands contain less than 15% and only 6.6% contains ≥25%. The mean price of LSS is slightly but not significantly higher than that of regular salts (1.82 versus 1.67 yuan/100 g, p = .07). In the lowest quartile by price, the cost of LSS is significantly higher than regular salts (difference 0.13, p = .0048). Further, when comparing the lowest price LSS to the lowest price regular since within the same brand, the mean price LSS is 2.11-fold that of the regular salt (1.66 versus 0.79 yuan/100 g, p < .05). The price of iodized LSS is also significantly higher than that of iodized regular salt (1.86 verse 1.44 yuan/100 g, p = .044). An annual subsidy based on the difference in price in the first quartile would cost 4.75 yuan per capita. A variety of LSS are available in China's salt market.
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Affiliation(s)
- Dejing Meng
- Department of Health PromotionChina Health Education CenterBeijingChina
| | | | | | - Zeng Ge
- Cardiovascular Health ProgramVital Strategies (USA) Jinan Representative OfficeJinanChina
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Khalesi S, Williams E, Irwin C, Johnson DW, Webster J, McCartney D, Jamshidi A, Vandelanotte C. Reducing salt intake: a systematic review and meta-analysis of behavior change interventions in adults. Nutr Rev 2022; 80:723-740. [PMID: 34921314 PMCID: PMC8907486 DOI: 10.1093/nutrit/nuab110] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT Prolonged high salt (sodium) intake can increase the risk of hypertension and cardiovascular disease. Behavioral interventions may help reduce sodium intake at the population level. OBJECTIVE The effectiveness of behavior change interventions to reduce sodium intake in adults was investigated in this systematic review and meta-analysis. DATA SOURCE The PubMed, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, and EMBASE databases were searched. DATA EXTRACTION Narrative synthesis and random-effects meta-analyses were used to determine intervention efficacy. A total of 61 trials (46 controlled trials and 15 quasi-experimental studies) were included. RESULTS Behavior change interventions resulted in significant improvements in salt consumption behavior (eg, decrease in purchase of salty foods; increase in use of salt substitutes), leading to reductions in sodium intake as measured by urinary sodium in 32 trials (N = 7840 participants; mean difference, -486.19 mg/d [95%CI, -669.44 to -302.95]; P < 0.001; I2 = 92%) and dietary sodium in 19 trials (N = 3750 participants; mean difference -399.86 mg/d [95%CI, -581.51 to -218.20]; P < 0.001; I2 = 96%), equivalent to a reduction of >1 g of salt intake daily. Effects were not significantly different based on baseline sodium intakes, blood pressure status, disease status, the use of behavior change theories, or the main method of intervention delivery (ie, online vs face-to-face). CONCLUSION Behavior change interventions are effective at improving salt consumption practices and appear to reduce salt intake by >1 g/d. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42020185639.
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Affiliation(s)
- Saman Khalesi
- Appelton Institute & School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton & Brisbane, Queensland, Australia
| | - Edwina Williams
- Appelton Institute & School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton & Brisbane, Queensland, Australia
| | - Christopher Irwin
- Menzies Health Institute Queensland and School of Health Sciences and Social Work, Griffith University, Gold Coast, Queensland, Australia
| | - David W Johnson
- Centre for Kidney Disease Research, University of Queensland, Brisbane, Queensland, Australia
- Translational Research Institute, Brisbane, Queensland, Australia
- MetroSouth Integrated Nephrology and Transplant Services (MINTS), Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Jacqui Webster
- The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Danielle McCartney
- Faculty of Science, School of Psychology, University of Sydney, Sydney, New South Wales, Australia
| | | | - Corneel Vandelanotte
- Appelton Institute & School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton & Brisbane, Queensland, Australia
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Dodd R, Santos JA, Tan M, Campbell NRC, Ni Mhurchu C, Cobb L, Jacobson MF, He FJ, Trieu K, Osornprasop S, Webster J. Effectiveness and Feasibility of Taxing Salt and Foods High in Sodium: A Systematic Review of the Evidence. Adv Nutr 2020; 11:1616-1630. [PMID: 32561920 PMCID: PMC7666895 DOI: 10.1093/advances/nmaa067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/05/2020] [Accepted: 05/12/2020] [Indexed: 01/04/2023] Open
Abstract
Diets high in salt are a leading risk for death and disability globally. Taxing unhealthy food is an effective means of influencing what people eat and improving population health. Although there is a growing body of evidence on taxing products high in sugar, and unhealthy foods more broadly, there is limited knowledge or experience of using fiscal measures to reduce salt consumption. We searched peer-reviewed databases [MEDLINE, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), and the Cochrane Database of Systematic Reviews] and gray literature for studies published between January 2000 and October 2019. Studies were included if they provided information on the impact on salt consumption of: taxes on salt; taxes on foods high in salt, and taxes on unhealthy foods defined to include foods high in salt. Studies were excluded if their definition of unhealthy foods did not specify high salt or sodium. We found 18 relevant studies, including 15 studies reporting the effects of salt taxes through modeling (8), real-world evaluation (4), experimental design (2), or review of cost-effectiveness (1); 6 studies providing information relevant to country implementation of salt taxes; and 2 studies reporting stakeholder perceptions toward salt taxation. Although there is some evidence on the potential effectiveness and cost-effectiveness of salt taxation, especially from modeling studies, uptake of salt taxation is limited in practice. Some modeling studies suggested that food taxes can have unintended outcomes such as reduced consumption of healthy foods, or increased consumption of unhealthy, untaxed substitutes. In contrast, modeling studies that combined taxes for unhealthy foods with subsidies found that the benefits were increased. Modeling suggests that taxing all foods based on their salt content is likely to have more impact than taxing specific products high in salt given that salt is pervasive in the food chain. However, the limited experience we found suggests that policy-makers favor taxing specific products.
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Affiliation(s)
- Rebecca Dodd
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
| | - Joseph Alvin Santos
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
| | - Monique Tan
- Wolfson Institute of Preventive Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | | | - Cliona Ni Mhurchu
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
| | - Laura Cobb
- Resolve to Save Lives, An Initiative of Vital Strategies, New York City, NY, USA
| | | | - Feng J He
- Wolfson Institute of Preventive Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- National Institute for Health Innovation, University of Auckland, Auckland, New Zealand
| | - Kathy Trieu
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
| | - Sutayut Osornprasop
- Global Practice on Health, Nutrition, and Population, The World Bank, Washington, DC, USA
| | - Jacqui Webster
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
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Hartmann-Boyce J, Bianchi F, Piernas C, Riches SP, Frie K, Nourse R, Jebb SA. Grocery store interventions to change food purchasing behaviors: a systematic review of randomized controlled trials. Am J Clin Nutr 2018; 107:1004-1016. [PMID: 29868912 PMCID: PMC5985731 DOI: 10.1093/ajcn/nqy045] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/20/2018] [Indexed: 12/30/2022] Open
Abstract
Background Diet is an important determinant of health, and food purchasing is a key antecedent to consumption. Objective We set out to evaluate the effectiveness of grocery store interventions to change food purchasing, and to examine whether effectiveness varied based on intervention components, setting, or socioeconomic status. Design We conducted a systematic review of randomized controlled trials (search performed June 2017). Studies must have: aimed to change food purchasing; been implemented in grocery stores (real or simulated); reported purchasing; and had a minimal control or compared interventions fulfilling our criteria. Searching, screening, bias assessment, and data extraction followed Cochrane methods. We grouped studies by intervention type (economic, environmental, swaps, and/or education), synthesized results narratively, and conducted an exploratory qualitative comparative analysis. Results We included 35 studies representing 89 interventions, >20,000 participants, and >800 stores. Risk of bias was mixed. Economic interventions showed the most promise, with 8 of the 9 studies in real stores and all 6 in simulated environments detecting an effect on purchasing. Swap interventions appeared promising in the 2 studies based in real stores. Store environment interventions showed mixed effects. Education-only interventions appeared effective in simulated environments but not in real stores. Available data suggested that effects of economic interventions did not differ by socioeconomic status, whereas for other interventions impact was variable. In our qualitative comparative analysis, economic interventions (regardless of setting) and environmental and swap interventions in real stores were associated with statistically significant changes in purchasing in the desired direction for ≥1 of the foods targeted by the intervention, whereas education-only interventions in real stores were not. Conclusions Findings suggest that interventions implemented in grocery stores-particularly ones that manipulate price, suggest swaps, and perhaps manipulate item availability-have an impact on purchasing and could play a role in public health strategies to improve health. Review protocol registered at https://www.crd.york.ac.uk/PROSPERO/ as CRD42017068809.
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Affiliation(s)
- Jamie Hartmann-Boyce
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom,Address correspondence to JH-B (e-mail: )
| | - Filippo Bianchi
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
| | - Carmen Piernas
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
| | - Sarah Payne Riches
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
| | - Kerstin Frie
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
| | - Rebecca Nourse
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
| | - Susan A Jebb
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
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Li JW, Yuan K, Shang SC, Guo Y. A safer hypoglycemic agent for type 2 diabetes—Berberine organic acid salt. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.09.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Santos JA, Trieu K, Raj TS, Arcand J, Johnson C, Webster J, McLean R. The Science of Salt: A regularly updated systematic review of the implementation of salt reduction interventions (March-August 2016). J Clin Hypertens (Greenwich) 2017; 19:439-451. [PMID: 28247592 PMCID: PMC8031001 DOI: 10.1111/jch.12971] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 12/03/2016] [Indexed: 11/10/2023]
Abstract
This review aims to identify, summarize, and appraise studies reporting on the implementation of salt reduction interventions that were published between March and August 2016. Overall, 40 studies were included: four studies evaluated the impact of salt reduction interventions, while 36 studies were identified as relevant to the design, assessment, and implementation of salt reduction strategies. Detailed appraisal and commentary were undertaken on the four studies that measured the impact of the interventions. Among them, different evaluation approaches were adopted; however, all demonstrated positive health outcomes relating to dietary salt reduction. Three of the four studies measured sodium in breads and provided consistent evidence that sodium reduction in breads is feasible and different intervention options are available. None of the studies were conducted in low- or lower middle-income countries, which stresses the need for more resources and research support for the implementation of salt reduction interventions in these countries.
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Affiliation(s)
- Joseph Alvin Santos
- The George Institute for Global HealthUniversity of SydneyCamperdownNew South WalesAustralia
| | - Kathy Trieu
- The George Institute for Global HealthUniversity of SydneyCamperdownNew South WalesAustralia
| | | | - JoAnne Arcand
- Faculty of Health SciencesUniversity of Ontario Institute of TechnologyOshawa OntarioCanada
| | - Claire Johnson
- The George Institute for Global HealthUniversity of SydneyCamperdownNew South WalesAustralia
| | - Jacqui Webster
- The George Institute for Global HealthUniversity of SydneyCamperdownNew South WalesAustralia
| | - Rachael McLean
- Departments of Preventive & Social Medicine/Human NutritionUniversity of OtagoDunedinNew Zealand
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Nakamura M, Ojima T. A modified DASH diet is one possible solution for overcoming the unfavorable link between vegetable and salt intake in the Japanese diet. Hypertens Res 2016; 39:756-757. [PMID: 27412798 DOI: 10.1038/hr.2016.83] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mieko Nakamura
- Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Toshiyuki Ojima
- Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
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