Iodine Intake and Tolerable Upper Intake Level of Iodine for Koreans

Lee, Hyun Sook; Min, Hyesun

doi:10.4163/kjn.2011.44.1.82

Cited by 22 publications

(15 citation statements)

References 55 publications

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“…The iodine consumption varied by area and food culture. Whereas the main sources of iodine have been reported to be seaweeds, fish, milk, and dairy products in Korea, they are known as milk, dairy products, cereal, iodized salt, and bakery products in the U.S. and European countries [25]. Seaweeds were also a preferred food by most respondents in this study.…”

Section: Discussionmentioning

confidence: 81%

“…It can be explained by the fact that LID restricts only iodine, a nutrient that is not emphasized in the nutrition education for general population. As iodine is not evenly dispersed in various types of food but is rather intensively contained in certain foods, such as seaweeds, it is important to provide education on foods with high iodine content and low iodine content [25]. The respondents generally possessed a low level of knowledge on the food types that are allowed and restricted for LID, except for their knowledge regarding the high iodine content in seaweeds.…”

Section: Discussionmentioning

confidence: 99%

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Knowledge, Self-Efficacy, and Perceived Barriers on the Low-Iodine Diet among Thyroid Cancer Patients Preparing for Radioactive Iodine Therapy

et al. 2012

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The purposes of the study were to assess knowledge, self-efficacy, and perceived barriers on a low-iodine diet among thyroid cancer patients and to identify strategies for nutrition education. A self-administered questionnaire was developed based on a review of literature and pilot-tested. A total of 121 female thyroid cancer patients participated in a survey and 117 responses were used for data analysis. An average knowledge score of the thyroid cancer patients was 4.5 point (available score: 0-10 point). Majority of the respondents knew that seaweeds such as lavers, brown seaweeds, and sea tangles contain large amount of iodine. However they mistook the low iodine diet as a low salt diet and were not aware of foods and seasonings that are allowed on the low iodine diet. While self-efficacy related to consuming various fruits and vegetables, to choosing potatoes and sweet potatoes for snacks, and restricting consumption of eggs, milk and milk products, and processed foods was rated highly, self-efficacy for preparing foods without using sea salts was rated low. The self-efficacy score increased as their interest on the dietary life and perceived cooking skills were greater. Most perceived barriers toward practicing the low iodine diet were related to preparation of the low iodine menus. As their interest in the dietary life and cooking and perceived cooking skills were greater, the patients perceived barriers on practicing the low iodine diet less. While the patients showed higher self-efficacy and lower barrier perception on selecting foods low in iodine and restricting food high in iodine, they showed lower self-efficacy and higher barrier perceptions on preparing low iodine meals. Clinical dietitians should recognize the gap between what the patients should know and what they really know and identify strategies on how to improve self-efficacy and reduce perceived barriers on the low iodine diet. Recent literature and the findings of the study reveal that incorporating cooking classes into nutrition education for thyroid patients is effective to enhance self-efficacy and to reduce perceived barriers on the low iodine diet.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Knowledge, Self-Efficacy, and Perceived Barriers on the Low-Iodine Diet among Thyroid Cancer Patients Preparing for Radioactive Iodine Therapy

et al. 2012

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“…This may be explained by the excessive intake of dietary iodine in Korea due to the regular consumption of sea mustard, sea tangle, laver, fish, milk, yogurt, beef, eggs, sea lettuce, and chicken [ 9 , 20 ]. Two observational studies reported that the mean urinary iodine excretion in Korea ranges from 673.6 to 3,800 µg/L [ 9 , 25 ]. These values are considerably higher than those from other countries, including the United States (145 µg/L) and China (306 µg/L) [ 12 , 26 ].…”

Section: Discussionmentioning

confidence: 99%

Reference interval for thyrotropin in a ultrasonography screened Korean population

Kim

et al. 2015

Korean J Intern Med

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Background/AimsThe diagnostic accuracy of thyroid dysfunctions is primarily affected by the validity of the reference interval for serum thyroid-stimulating hormone (TSH). Thus, the present study aimed to establish a reference interval for TSH using a normal Korean population.MethodsThis study included 19,465 subjects who were recruited after undergoing routine health check-ups. Subjects with overt thyroid disease, a prior history of thyroid disease, or a family history of thyroid cancer were excluded from the present analyses. The reference range for serum TSH was evaluated in a normal Korean reference population which was defined according to criteria based on the guidelines of the National Academy of Clinical Biochemistry, ultrasound (US) findings, and smoking status. Sex and age were also taken into consideration when evaluating the distribution of serum TSH levels in different groups.ResultsIn the presence of positive anti-thyroid peroxidase antibodies or abnormal US findings, the central 95 percentile interval of the serum TSH levels was widened. Additionally, the distribution of serum TSH levels shifted toward lower values in the current smokers group. The reference interval for TSH obtained using a normal Korean reference population was 0.73 to 7.06 mIU/L. The serum TSH levels were higher in females than in males in all groups, and there were no age-dependent shifts.ConclusionsThe present findings demonstrate that the serum TSH reference interval in a normal Korean reference population was higher than that in other countries. This result suggests that the upper and lower limits of the TSH reference interval, which was previously defined by studies from Western countries, should be raised for Korean populations.

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“…In the present study, however, the preablation Tg levels above 10 ng/ml had a relatively high PPVof 87.5 %. This study was conducted at an institution located in the southwestern part of South Korea, where the dietary iodine content is known to be high [26,27]. The high dietary iodine content could be associated with the high rate of therapeutic failure in this study.…”

Section: Discussionmentioning

confidence: 99%

Stimulated Serum Thyroglobulin Level at the Time of First Dose of Radioactive Iodine Therapy Is the Most Predictive Factor for Therapeutic Failure in Patients With Papillary Thyroid Carcinoma

Park

Jeong

Kwon

et al. 2014

Nucl Med Mol Imaging

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Iodine Intake and Tolerable Upper Intake Level of Iodine for Koreans

Cited by 22 publications

References 55 publications

Knowledge, Self-Efficacy, and Perceived Barriers on the Low-Iodine Diet among Thyroid Cancer Patients Preparing for Radioactive Iodine Therapy

Knowledge, Self-Efficacy, and Perceived Barriers on the Low-Iodine Diet among Thyroid Cancer Patients Preparing for Radioactive Iodine Therapy

Reference interval for thyrotropin in a ultrasonography screened Korean population

Stimulated Serum Thyroglobulin Level at the Time of First Dose of Radioactive Iodine Therapy Is the Most Predictive Factor for Therapeutic Failure in Patients With Papillary Thyroid Carcinoma

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