Estimated dietary intake of vitamin A in Korean adults: Based on the Korea National Health and Nutrition Examination Survey 2007~2012
2016
Kim, S.A., Seoul National University, Seoul, Republic of Korea | Jun, S., Seoul National University, Seoul, Republic of Korea | Joung, H., Seoul National University, Seoul, Republic of Korea
Purpose The purpose of this study was to estimate dietary vitamin A intake and examine major food sources of vitamin A in Korean adults. Methods Using data from the 2007~2012 Korea National Health and Nutrition Examination Survey, a total of 33,069 subjects over 19-years-old were included in this study. We estimated individual daily intakes of retinol, carotenoids such as alpha-carotene, beta-carotene, beta-cryptoxanthin, lutein/zeaxanthin, and lycopene, and vitamin A by linking food consumption data with the vitamin A database of commonly consumed foods. We compared individual vitamin A intakes with the reference value of Dietary Reference Intakes for Koreans. Results Average dietary vitamin A intakes of study subjects were 864.3 μg retinol equivalent/day (495.7 μg retinol activity equivalent/day) in men and 715.0 킽 retinol equivalent/day (403.6 μg retinol activity equivalent/day) in women. Exactly 42.9% and 70.6% of total subjects consumed less vitamin A than the Estimated Average Requirement (EAR) based on retinol equivalent and retinol activity equivalent, respectively. The major food sources of vitamin A were Korean radish leaves, carrot, red pepper, and laver, and the top 20 foods provided about 80% of total vitamin A intake. Conclusion This study provides basic data for estimation of vitamin A intake in Korean adults. Further research will be needed to analyze the association of insufficient or excess intakes of vitamin A and health problems in the Korean population.
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