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  1. Biochemical folate, B12, and iron status of a group of pregnant adolescents accessed through the public health system in southern Ontario.

    Article - En anglais


    This study was designed to estimate the prevalence of biochemical iron, folate, and vitamin B12 depletion among a group of Canadian pregnant adolescents accessed through the Public Health system.

    Further, the impact of prenatal supplement use, chronologic age, gynecologic age, living arrangement, main source of income, postpartum custody plan, time of entry into prenatal care, and cigarette smoking on laboratory indices of the three nutrients were determined.


    Fifty-eight adolescents (14.5-19.0 years) were interviewed and blood samples were collected at 36 ± 2 wk gestation.


    Thirteen (22%) of the pregnant adolescents had anemia (hemoglobin<110g/L) and forty-five (78%) had depleted iron stores (plasma ferritin<26.6 pmol/L or 12.0 ug/L).

    Twenty-five subjects had plasma B12 values in the sub-optimal range (<148 pmol/L).

    Five of the 16 adolescents who infrequently or never consumed a folate-containing supplement had suboptimal erythrocyte folate values.

    Twenty-four percent of the subjects had hypersegmented neutrophils and of these, all and 71% of subjects had plasma ferritin and B12 concentrations in the suboptimal range, respectively.


    Data from the present study indicate that plasma B12 and ferritin levels are low in a group of pregnant adolescents.

    These low values appear to be associated with a high prevalence of hypersegmented neutrophils.

    Mots-clés Pascal : Malnutrition, Vitamine B, Folique acide, Elément minéral, Micronutriment, Nutrition, Ontario, Canada, Amérique du Nord, Amérique, Adolescent, Homme, Femelle, Gestation, Folate, Cyanocobalamine, Fer, Etat nutritionnel, Carence alimentaire, Carence vitaminique, Prévention

    Mots-clés Pascal anglais : Malnutrition, B-Vitamins, Folic acid, Inorganic element, Micronutrient, Nutrition, Ontario, Canada, North America, America, Adolescent, Human, Female, Pregnancy, Folate, Cyanocobalamin, Iron, Nutritional status, Nutritional deficiency, Vitamin deficiency, Prevention

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 95-0410515

    Code Inist : 002B29B. Création : 01/03/1996.