• 한국식품영양학회지
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• 제31권1호
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• pp.143-148
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• 2018

The objective of this study is to provide direction in the improvement of sodium labeling in an effort to reduce consumption. We surveyed confirmation and importance of food labeling and nutrition information and we also analyzed the willingness to pay on new nutrients labeling. Consumers checked the sell-by-date, product name, method of intake, but not nutritional information. They also checked for calories and carbohydrates but they were not interested in sodium, sugar, and trans fat which are health hazard nutrients. It is necessary to improve nutrition labeling, because consumers are experiencing difficulties in obtaining sodium information under the nutrition labeling system. Consumers will pay about 0.66% more if new sodium labeling is introduced. In conclusion, food labeling system can be improved by smooth and efficient access of information. for health-hazard nutritional components, such as sodium, it is important to introduce policies that reduce their intake. This can be done by providing consumers with clear and concise information. The social costs of high sodium intake could be reduced, hence improving the national health.

• Nutrition Research and Practice
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• 제8권6호
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• pp.719-723
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• 2014

BACKGROUND/OBJECTIVES: South Korean's sodium consumption level is more than twice the upper limit level suggested by the WHO. Steep increases in the prevalence of hypertension and cardiovascular disease in Korea necessitate more effective sodium reduction programs. This study was conducted in order to compare sodium intake-related eating behaviors and key psychosocial factors according to age group and gender. SUBJECTS/METHODS: Using an online survey, a total of 1,564 adults (20-59 years old) considered to be geographically representative of South Korea were recruited and surveyed. The major outcomes were perceived behaviors, knowledge, intentions, and self-efficacy related to sodium intake. RESULTS: The results show that perceived behavior and level of self-efficacy related to low sodium consumption differed by age and gender. Female participants showed better behavior and intention towards low sodium intake than male counterparts. Young participants in their 20s showed the lowest intention to change their current sodium intake as well as lowest self-efficacy measures. CONCLUSIONS: Future sodium reduction interventions should be developed with tailored messages targeting different age and gender groups. Specifically, interventions can be planned and implemented at the college level or for workers in their early career to increase their intention and self-efficacy as a means of preventing future health complications associated with high sodium intake.

• 대한지역사회영양학회지
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• 제19권4호
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• pp.342-360
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• 2014

Objectives: This study aimed to develop nutrition education program for consumers to reduce sodium intake based on social cognitive theory (SCT). Methods: The main factors of SCT related to low sodium diet were investigated by using focus group interview (FGI) with 30 women who participated in consumer organizations. Results: The main target groups for the education program were housewives (H), parents (P), and the office workers (OW), for which we considered their influences on other people and the surroundings. According to the results of FGI, in carrying out low sodium diet, 'positive outcome expectation' were prevention of chronic disease and healthy dietary habit, and 'negative outcome expectation' were low palatability of foods, difficulty in cooking meals, and limited choice of foods. The contents of the program and education materials were individualized by each group to raise self-efficacy and behavioral capability, which reflected the results of the FGI. The program included 'salt intake and health' to raise positive outcome expectation. For improving the ability to practice low-sodium diet, the program contained the contents that focused on 'cooking' and 'food purchasing' for H, on 'purchasing and selection of low-sodium food with the children' for P, and on 'way of selecting restaurant menu' for OW. Also the program included 'way of choosing the low-sodium foods when eating out' with suggestions on sodium content of the dishes and snacks. Further, 'dietary guidelines to reduce sodium intake' was also suggested to help self-regulation. Conclusions: This nutrition education program and education materials could be utilized for the community education and provide the basis for further consumer targeted education program for reducing sodium intake.

• 한국식품영양학회지
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• 제37권2호
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• pp.88-99
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• 2024

This study aimed to provide an accurate estimate of sodium intake from jangajji by examining the changes in sodium content according to the type of jangajji and the length of storage period, specifically differentiating between the solid ingredients and the seasoning liquid. It focused on six types of jangajji: chili pepper, perilla leaf, onion, radish, garlic scape, and cucumber. The sodium content in the solid ingredients and the seasoning was measured using a salinometer and ICP-AES. The results indicated that across all types of jangajji, the seasoning liquid consistently contained significantly higher levels of sodium than the solid ingredients. When comparing the sodium content measured by ICP-AES with that from a salinometer, the salinometer readings were significantly lower for both the solid ingredients and the seasoning liquid in all types of jangajji. Additionally, when comparing the sodium content of the solid ingredients with that listed in the nation's representative nutritional databases, a substantial discrepancy was noted, with some cases potentially overstating the actual sodium intake from jangajji. Overall, this study suggests that an urgent review should be conducted to identify and resolve the causes of such discrepancies and accurately estimate the actual sodium intake from jangajji.

• Nutrition Research and Practice
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• 제14권5호
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• pp.501-518
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• 2020

BACKGROUND/OBJECTIVES: Sodium intake is positively associated with blood pressure, which may increase the risk for cardiovascular disease (CVD). Therefore, we assessed the disease burden of CVD attributable to sodium intakes above 2,000 mg/day and prospectively investigated the association between dietary/urinary sodium levels and the risk of all-cause and CVD-mortality using the Korea National Health and Nutrition Examination Survey (KNHNES). SUBJECTS/METHODS: A total of 68,578 and 33,113 participants were included for comparative risk assessment (CRA) analysis and mortality analysis, respectively, and mean follow-up time for mortality was 5.4 years. CRA analysis was used to quantify attributable incidences of stroke, ischemic heart disease (IHD), and deaths attributable to sodium intake between 1998 and 2016. Cox proportional hazard regression model was used to determine the association between sodium intake and all-cause and CVD-mortality. RESULTS: Mean dietary sodium intake decreased over time, reaching 3,647 mg/day in 2016. Similarly, the population attributable fractions of stroke and IHD, and the number of CVD-associated deaths attributable to high sodium intake/excretion also decreased. In terms of association with mortality, when participants were grouped into quartiles (Q) by energy-adjusted sodium intake, those in Q2 had a lower risk of all-cause mortality than those in Q1 with lower intakes. The risk of CVD-associated mortality was higher only in females with high sodium intake in Q4 than those in Q1. CONCLUSIONS: This nationwide data indicates that, in line with previous studies of multiple cohorts, both low and high sodium intakes may be associated with an increased risk of mortality; therefore, the optimal sodium intake for Koreans needs to be revised.

• Nutrition Research and Practice
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• 제6권6호
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• pp.534-541
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• 2012

This study examined salty taste acuity and salty taste preference and sodium intake in relation to zinc nutritional status in 2 rural populations in Korea. And we also examined the main food contributors of their sodium intakes. We enrolled 218 adults (66 men and 152 women) from the Kangneung and Samcheok regions in Korea's Kangwon province in our study conducted from December 2011 to February 2012. Participants from each region were divided into 3 groups based on their serum zinc level (T1: lowest, T2: intermediate, T3: highest). We compared the salty taste acuity and preference, Na index (Dish Frequency Questionnaire for estimation of habitual sodium intake), blood pressure, and intakes of nutrients including sodium by 3 groups of serum zinc level. The results were as follows: a higher serum zinc level indicated a lower sodium intake and Na index (P<0.05). The salty taste acuity was considerably higher for participants from the Kangneung region than those from the Samcheok region (P<0.05). And the serum zinc level was significantly higher in participants from the Kangneung region than those from the Samcheok region (P<0.05). We further divided the participants into 2 groups: those who consumed more zinc than the recommended intake (RI) and the others. We compared salty taste acuity and salty taste preference in the 2 groups. The salty taste threshold and palatable salty taste concentrations were lower for the group with a zinc intake above RI than for the group with zinc intake below the RI. However, the difference was not significant. This study confirms that taste function differs depending on zinc nutritional status. In future, it is required to a large-scale, long-term, prospective study on the correlation between zinc intake, serum zinc levels, and taste perception function and blood pressure.

• Journal of Nutrition and Health
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• 제47권1호
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• pp.51-66
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• 2014

제주지역 초등학생 701명과 중학생 1,184명을 대상으로 끼니별, 식품군별, 음식군별 나트륨 섭취 실태를 파악하였으며 그 결과는 다음과 같다. 초등학교 조사대상자는 에너지 권장섭취량의 남, 여학생 각각 87.5%, 93.9%이었고, 중학생은 남 여학생 각각 86.1%, 91.7% 이었다. 나트륨 섭취량은 초등학교 남학생이 2,917.2 mg, 여학생 2,819.5 mg이었고, 중학생은 남학생이 3,336.6 mg, 여학생 2,828.1 mg이었다. 초등학생은 하루 총 식품 섭취량의 39.1%를 간식에서 중학생은 점심에서 34.3%를 섭취하고 있었다. 초등학생의 총 열량 섭취량에 대한 아침, 점심, 저녁, 간식의 열량 섭취 비율은 19.8%, 26.8%, 29.8%, 23.6%이었고, 중학생의 경우 열량 섭취 비율은 17.2%, 33.6%, 27.2%, 22.0%이었고, 이에 비해 각 끼니별 나트륨 섭취 비율은 초등학생의 경우 18.0%, 35.1%, 32.8%, 14.1%이었고, 중학생은 15.3%, 40.2%, 29.1%, 15.5%이었다. 초등학생, 중학생 모두 학교급식으로 인하여 점심에서 얻어지는 열량 및 나트륨 섭취량이 가장 높음을 알 수 있었다. 나트륨 섭취량이 높은 식품군은 양념류 (초등학생 1,252.5mg, 중학생 1,158.0 mg), 채소류 (초등학생 409.0 mg, 중학생 495.6 mg), 곡류 (초등학생 322.4 mg, 중학생 647.8 mg), 어패류 (초등학생 255.3 mg, 중학생 336.6 mg)이었으며, 곡류군을 제외한 이들 식품군은 점심과 저녁에서 그 사용량이 더 높았고 이는 학교급식이나 저녁에 먹는 부식의 다양성을 보여주고 있었다. 이에 비해 간식에서 나트륨 섭취비율이 높은 식품군은 곡류군으로 초등학생은 하루 총 나트륨 섭취량의 5.9%를 중학생은 9.8%를 섭취하는 것으로 나타나 이와 관련된 간식 음식 선택에 대한 교육이 필요하다고 본다. 음식군별 나트륨 섭취 비율은 초등학생 중학생 모두 국류와 찌개류에서 나트륨 섭취량의 19.8%와 25.4%를 섭취하는 것으로 나타났다. 이어 나트륨 섭취비율이 높은 음식은 김치류이었다. 전체적으로 무침류, 국류, 김치류, 구이류, 볶음류, 일품요리 등에서 나트륨 섭취 비율이 높았다. 끼니에 따른 나트륨 섭취비율을 보면 점심에서 국, 김치, 찌개, 튀김, 볶음 등 다양한 부식에서 얻어지고 있었고, 저녁에는 면류, 구이, 일품요리 등에서 간식에서는 빵 과자류, 면류에서 나트륨 섭취가 높은 것으로 나타났다. 이상의 결과를 종합해 볼 때 제주지역 초 중학교 학생들의 나트륨 섭취 실태는 점심식사에서 다양한 부식을 통한 나트륨 섭취량이 높은 것으로 나타났다. 단백질 급원 식품이나 미량영양소의 공급을 고려하면, 채소와 어패류, 해조류, 육류 등으로 다양한 조리방법을 사용하는 음식군의 배제보다는 짠맛을 조절할 수 있는 미각교육이 필요하다고 여겨지며, 아울러 나트륨 섭취비율이 가장 높은 국물 섭취에 대한 영양교육과 또한 점심에서 얻어지는 나트륨 섭취 비율이 높으므로 학교급식 조리종사자 및 영양사를 대상으로도 나트륨 저감화를 위한 교육이 필요하다. 부식보다는 나트륨 섭취 비율이 낮지만 간식에서 섭취되는 면류인 라면이나, 빵 과자류, 음료는 나트륨 섭취도 높일 뿐 아니라 열량 섭취도 높이므로 과일과 우유 및 유제품 등의 올바른 간식 음식 선택에 대한 교육도 나트륨 섭취를 줄일 수 있는 방법이다.

• 대한지역사회영양학회지
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• 제14권1호
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• pp.123-136
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• 2009

Sodium is a necessary element for the body. Excessive intake of sodium is known as one of the risk factors for chronic diseases. Recently, increasing numbers of people in Korea are suffering from chronic diseases. Major causes of deaths were chronic degenerative disease with the rising aging population. Especially, the population of rural areas is growing older fast. In rural areas, it is known that under nutrition and high sodium intake were major nutritional problems. For sodium intake, there were some studies about contributing food items. They were not enough to show diets relate to sodium intakes. Thus, this study analyzed dishes contributing to sodium intakes of elderly living in rural areas. Dietary intakes using "the 24hour recall method" were used. For the analysis for sodium intakes, "Can-pro3.0" was used. Ranking of dishes by contributions of sodium intakes were Korean cabbage, kimchi (19.6%), seasoned soybean paste (5.3%), soybean paste (4.6%), soybean paste soup dried radish leaves (3.5%), hot pork and kimchi stew (3.4%) in order. Ranking of dish groups by sodium intakes was kimchies (28.3%), soup and hot soups (22.8%), stews and casseroles (9.7%), seasonings (8.2%),and seasoned vegetables (6.0%) in order. One-dish meals among cooked rice, wheat noodles among noodle and mandu, soups using the soybean paste, stews using soybean paste and kimchi, salted fish among grilled foods, stir-fried anchovy among stir-fried foods, seasoned spinach, and Korean cabbage kimchi contributed to sodium intakes. As the nutrition deficiency of the elderly living in rural areas could be a problem, and excessive sodium intakes is threatening to their health, it is needed for the senior citizens to have adequate knowledge for diets containing less sodium. And recipes for healthy food and nutrition education based on their diets are needed.

• 대한지역사회영양학회지
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• 제17권3호
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• pp.341-352
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• 2012

It is well established that excessive sodium intake is related to a higher incidence of chronic diseases such as hypertension, stroke, coronary heart disease, cardiovascular disease and gastric cancer. Although the upper limit of the current sodium intake guideline by WHO is set at 2,000 mg/day for adults, sodium intake of Koreans is well over 4,700 mg/capita/day implying an urgent need to develop and implement sodium intake reduction policy at the national level. This study investigated the cost-effectiveness of the sodium intake reduction policy, for the first time, in Korea. Analyses were performed using most recent and representative data on national health insurance statistics, healthcare utilization, employment information, disease morbidity/mortality, etc. The socioeconomic benefits of the policy, resulting from reduced morbidity of those relevant diseases, included lower medical expenditures, transportation costs, caregiver cost for inpatients and income losses. The socioeconomic benefits from diminished mortality included reductions in earning losses and welfare losses caused by early deaths. It is estimated that the amount of total benefits of reducing sodium intake from 4.7 g to 3.0 g is 12.6 trillion Korean Won; and the size of its cost is 149 billion Won. Assuming that the effect of sodium intake reduction would become gradually evident over a 5-year period, the implied rate of average return to the sodium reduction policy is 7,790% for the following 25 years, suggesting a very high cost-effectiveness. Accordingly, development and implementation of a mid-to-long term plan for a consistent sodium intake reduction policy is extremely beneficial and well warranted.

• Journal of Nutrition and Health
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• 제46권1호
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• pp.72-85
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• 2013

The purpose of this study was to evaluate trends in the sources of dietary sodium intake in a representative Korean population in the Korea National Health and Nutrition Examination Survey (KNHANES) conducted in 1998, 2001, 2005, 2007, 2008, 2009, and 2010. The study consisted of 53,570 men and women aged 7 years or older participating in the KNHANES during the corresponding years. Overall sodium intake and the mean percent contribution of each dish and food group to dietary sodium intake across 1998-2010 were calculated. The means of sodium intake ranged between 4,572.6-5,498.9 mg/d across 1998-2010. The major dish groups contributing to dietary sodium intake were kimchi (1,154.8-1,521.2 mg/d), noodles and dumplings (505.3-760.5 mg/d), soups (465.3-714.8 mg/d), and stews and casseroles (387.0-579.8 mg/d). The combined mean percent contribution from the top four dish groups contributing to dietary sodium intake showed a slight decrease over the period; 64.4% in 1998, 64.5% in 2001, 59.3% in 2005, 58.2% in 2007, 56.3% in 2008, 56.7% in 2009, and 54.4% in 2010. The major food groups contributing to dietary sodium intake were seasonings (1,852.9-2,435.9 mg/d), vegetables (1,425.6-1,792.1 mg/d), grains (482.2-778.1 mg/d), and fish and shellfish (257.2-351.4 mg/d). In addition, the combined mean percent contribution from the top four food groups showed a slight decrease over the period; 92.8% in 1998, 93.2% in 2001, 93.8% in 2005, 92.1% in 2007, 91.7% in 2008, 90.9% in 2009, and 90.7% in 2010. In summary, we did not observe a reduction in dietary sodium intake over time, however, the percent contributions from the top major dish groups or food groups to dietary sodium intake showed a decrease over the last decade.