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Nutrient Requirements

Cholesterol Intake Is Associated with Lecithin Intake in Japanese People^1,2

Masataka Ishinaga³, Aiko Ueda, Teruyo Mochizuki^*, Sumi Sugiyama and Toshio Kobayashi^**

Department of Health Sciences, Hiroshima Prefectural Women’s University, Hiroshima, 734-8558 Japan; ^* Graduate School of Education, Hiroshima University, Higashi-Hiroshima, 739-8524 Japan; Hiroshima Bunkyo Women’s University, Asakita-ku, Hiroshima 731-0295 Japan; and ^** Graduate School of Health Sciences, Hiroshima University, Hiroshima, 734-8551 Japan

³To whom correspondence should be addressed. E-mail: isinaga{at}pu-hiroshima.ac.jp.

Many dietary recommendations for the prevention of heart disease and hyperlipidemia include restriction of cholesterol intake. However, limiting cholesterol intake might also affect the intake of other nutrients. The daily intakes of cholesterol, lecithin, total fatty acids, and SFAs by 388 Japanese subjects (ages 6–59 y) were analyzed directly using the duplicate portion sampling technique. Intakes were 266.1 ± 146.5 mg/d, 1.6 ± 0.9 g/d, 39.3 ± 16.8 g/d, and 12.8 ± 6.9 g/d, respectively. There was a strong positive correlation between cholesterol and lecithin intakes (r = 0.864, P < 0.001), and when food intake was adjusted to 1 kg/d, the correlation remained high (r = 0.881, P < 0.001). In contrast, the correlation between total fatty acid and lecithin intakes was lower (r = 0.423, P < 0.001), and when food intake was adjusted to 1 kg/d, the correlation coefficient remained stable (r = 0.448, P < 0.001). These results strongly indicate that limiting cholesterol intake decreases lecithin intake. Lecithin intake can be estimated from the following regression equation: lecithin intake (g/d) = 0.005 x cholesterol intake (mg/d) + 0.16 (R² = 0.747, P < 0.001). Furthermore, the intake of choline derived from lecithin can be estimated by the following equation: choline (mg/d) = 0.724 x cholesterol (mg/d) + 21.5.

KEY WORDS: • cholesterol • lecithin • choline • daily Intake • dietary recommendation