Folate intake and food sources in Japanese female dietitians.

Environmental health and preventive medicine

PubMedID: 21432271

Imaeda N, Goto C, Tokudome Y, Ikeda M, Maki S, Tokudome S. Folate intake and food sources in Japanese female dietitians. Environ Health Prev Med. 2002;7(4):156-61.
OBJECTIVE
To assess intake of folate/folic acid and food sources in Japanese female dietitians.

SUBJECTS AND METHODS
We evaluated folate consumption based on four season 7 consecutive day weighed diet records (WDRs) provided by 80 Japanese female dietitians and compared the results with data from a national survey. We then selected informative foods for folate intake on the basis of 2,240 WDRs according to contribution and multiple regression analyses.

RESULTS
Daily folate consumption (mean±SD) among Japanese dietitians was 413±158 µg from raw foods and 343±128 µg from cooked foods. Average residual rate after cooking was 84±8%. Folate intake in summer was lower than that in other seasons by analysis of variance. According to contribution and multiple regression analyses, the major contributors were vegetables, fruit and green tea.

CONCLUSIONS
Daily folate intake among Japanese female dietitians was far greater than the 200 µg recommended daily allowance for the Japanese. Irrespective of selection methods and raw/cooked foods, major folate sources were found to be green tea along with vegetables and fruit.