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Titolo:
Estimates of the effects of folic-acid fortification and folic-acid bioavailability for women
Autore:
Boushey, CJ; Edmonds, JW; Welshimer, KJ;
Indirizzi:
Purdue Univ, Dept Foods & Nutr, W Lafayette, IN 47907 USA Purdue Univ W Lafayette IN USA 47907 ds & Nutr, W Lafayette, IN 47907 USA
Titolo Testata:
NUTRITION
fascicolo: 10, volume: 17, anno: 2001,
pagine: 873 - 879
SICI:
0899-9007(200110)17:10<873:EOTEOF>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
NHANES-II SURVEY; HOMOCYSTEINE CONCENTRATIONS; ELDERLY POPULATION; QUANTITATIVE DATA; NUTRIENT SOURCES; AMERICAN DIET; PLASMA FOLATE; RISK FACTOR; QUESTIONNAIRE; DISEASE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Boushey, CJ Purdue Univ, Dept Foods & Nutr, 1264 Stone Hall,Room 202, W Lafayette, IN 47907 USA Purdue Univ 1264 Stone Hall,Room 202 W Lafayette IN USA 47907
Citazione:
C.J. Boushey et al., "Estimates of the effects of folic-acid fortification and folic-acid bioavailability for women", NUTRITION, 17(10), 2001, pp. 873-879

Abstract

OBJECTIVE: With the recent implementation of the folic-acid-fortification program, our objective was to estimate its benefits in adult women and account for the higher bioavailability of synthetic folic acid in fortificationprograms and supplements. METHODS: The study used a cross-sectional design. Dietary assessment data were collected with a quantitative food-frequency questionnaire, the Nutrition DISCovery program. Fortification was simulated with the use of fortification standards (140 mug/100 g of flour) and new bioavailability standards for synthetic folic acid. Data were collected from 289 women 18 to 89 y old. Subjects were recruited from participants in two health-screening events in autumn of 1997. Chi-square tests were used to estimate the differences between categoric. variables, and F tests were used in analysis of variance for continuous outcome measures. Results were considered significant at P <0.05. RESULTS: Estimated mean dietary intake of folate increased considerably with simulation of fortification (320 to 608 <mu>g of dietary folate equivalents). Women in the lower quartiles for age (18 to 39 and 40 to 46 y) consumed more servings from the bread group than women did in the upper quartile (55 to 89 y). Thus, the improvement in folate intake with fortification wassignificantly greater for the younger than for the older women (P < 0.05). Despite the limitations of estimating folate intakes, these data suggest that most women met the new estimated average requirement. However, 61% of women of childbearing age had intakes of synthetic folic acid below the recommended level of 400 <mu>g/d, and only those using supplements containing folic, acid met the guideline. CONCLUSIONS: Based on this sample of well-educated, adult women, the current level of folic-acid fortification should improve the intakes of a large proportion of women, especially when accompanied by supplements containing folic acid. These improvements in folate intake might not be seen in groupswith limited resources, however. Further, under existing standards and practices, many women will not meet current recommendations for prevention of neural-tube defects. Nittrition 2001;17-873-879.(C) Elsevier Science Inc. 2001.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 13:53:49