Alpha-tocopherol intake and plasma concentration of hispanic and non-hispanic white elders is associated with dietary intake pattern

Auteur(s) :
Gao X., Tucker KL., Martin CA., Bermudez OI., Lin BH.
Date :
Oct, 2006
Source(s) :
JOURNAL OF NUTRITION. #136:10 p2574-2579
Adresse :
Addresses: Tucker KL (reprint author), Tufts Univ, USDA, Jean Mayer Human Nutr Res Ctr, Medford, MA 02155 USA Tufts Univ, USDA, Jean Mayer Human Nutr Res Ctr, Medford, MA 02155 USA Boston VA Healthcare Syst, Ctr Org Leadership & Management Res, Boston, MA USA E-mail Addresses: Publisher: AMER SOCIETY NUTRITIONAL SCIENCE, 9650 ROCKVILLE PIKE, RM L-2407A, BETHESDA, MD 20814 USA, Discipline: FOOD SCIENCE/NUTRITION ENDOCRINOLOGY, NUTRITION & METABOLISM CC Editions/Collections: Agriculture, Biology & Environmental Sciences (ABES); Life Sciences (LS) IDS Number: 089OH

Sommaire de l'article

Alpha-Tocopherol from foods has been associated with protection against several chronic diseases and maintenance of immune function. However, most people do not meet current recommendations for intake. We examined alpha-tocopherol intake and plasma concentration in a representative sample of Puerto Rican and Dominican older adults (n = 447) and in neighborhood-matched non-Hispanic whites (n = 155). A validated food frequency questionnaire was used to assess dietary intake. Mean dietary intakes of alpha-tocopherol were 6 mg in both ethnicities. Only 4.7% of women and 7.9% of men met the estimated average requirement (12 mg/d) for vitamin E from food alone. Top sources of alpha-tocopherol for Hispanics included oils and milk, and for non-Hispanic whites they were ready-to-eat breakfast cereal and sweet baked products. Mean plasma alpha-tocopherol concentrations were 24.5 µmol/L for Hispanics and 25.8 µmol/L for non-Hispanic whites (P > 0.05). Plasma alpha-tocopherol was positively associated with alpha-tocopherol intake (P= 0.003), and significance remained after adjusting covariates and after exclusion of supplement users (P for trend = 0.008). We identified the following 5 dietary patterns by cluster analysis: 1) fruit and breakfast cereal, 2) starchy vegetables, 3) rice, 4) milk and milk products, and 5) sweets. Those following the sweets pattern had the lowest plasma alpha-tocopherol relative to those following the fruit and breakfast cereal or milk patterns (P < 0.05 for all), although they had similar intakes. A large proportion of these elders > 90%) have inadequate intake of alpha-tocopherol, and plasma concentrations were associated with intake patterns.

Source : Pubmed