title: Dietary Intake at 9 Years and Subsequent Body Mass Index in Adolescent Boys and Girls: A Study of Monozygotic Twin Pairs.
abstract: There is a lack of evidence pointing to specific dietary elements related to weight gain and obesity prevention in childhood and adulthood. Dietary intake and obesity are both inherited and culturally transmitted, but most prospective studies on the association between diet and weight status do not take genetics into consideration. The objective of this study was to document the association between dietary intake at 9 years and subsequent Body Mass Index (BMI) in adolescent monozygotic boy and girl twin pairs. This research used data from 152 twin pairs. Dietary data were collected from two 24-hour-recall interviews with a parent and the child aged 9 years. Height and weight were obtained when the twins were aged 9, 12, 13, and 14 years. Intrapair variability analysis was performed to identify dietary elements related to BMI changes in subsequent years. BMI-discordant monozygotic twin pairs were also identified to analyze the dietary constituents that may have generated the discordance. After eliminating potential confounding genetic factors, pre-adolescent boys who ate fewer grain products and fruit and consumed more high-fat meat and milk had higher BMIs during adolescence; pre-adolescent girls who consumed more grain products and high-fat meat and milk had higher BMIs during adolescence. Energy intake (EI) at 9 years was not related to BMI in subsequent years. Our study suggests that messages and interventions directed at obesity prevention could take advantage of sex-specific designs and' eventually' genetic information.
authors.affiliation: School of Epidemiology,Public Health and Preventive Medicine,University of Ottawa,Ottawa,ON,Canada.
authors.forename: Lise
authors.initials: L
authors.lastname: Dubois
authors.affiliation: School of Epidemiology,Public Health and Preventive Medicine,University of Ottawa,Ottawa,ON,Canada.
authors.forename: Maikol
authors.initials: M
authors.lastname: Diasparra
authors.affiliation: Department of Public Health,University of Helsinki,Helsinki,Finland.
authors.forename: Leonie-Helen
authors.initials: LH
authors.lastname: Bogl
authors.affiliation: School of Nutrition Sciences,University of Ottawa,Ottawa,ON,Canada.
authors.forename: Bénédicte
authors.initials: B
authors.lastname: Fontaine-Bisson
authors.affiliation: School of Epidemiology,Public Health and Preventive Medicine,University of Ottawa,Ottawa,ON,Canada.
authors.forename: Brigitte
authors.initials: B
authors.lastname: Bédard
authors.affiliation: Research Unit on Children's Psychosocial Maladjustment,Sainte-Justine Hospital Research Centre,Montreal,QC,Canada.
authors.forename: Richard E
authors.initials: RE
authors.lastname: Tremblay
authors.affiliation: Department of Public Health,University of Helsinki,Helsinki,Finland.
authors.forename: Jaakko
authors.initials: J
authors.lastname: Kaprio
authors.affiliation: School of Psychology,Université Laval,Québec,QC,Canada.
authors.forename: Michel
authors.initials: M
authors.lastname: Boivin
mesh_terms: D000293:Adolescent; D015992:Body Mass Index; D002648:Child; D004040:Dietary Carbohydrates / Q000008:administration & dosage / Q000032:analysis; D004041:Dietary Fats / Q000008:administration & dosage / Q000032:analysis; D004044:Dietary Proteins / Q000008:administration & dosage / Q000032:analysis; D002149:Energy Intake; D005247:Feeding Behavior; D005260:Female; D005638:Fruit; D006801:Humans; D008297:Male; D011939:Mental Recall; D009765:Obesity / Q000517:prevention & control; D011446:Prospective Studies; D011792:Quebec; D012737:Sex Factors; D012959:Socioeconomic Factors; D014430:Twins, Monozygotic; D014675:Vegetables; D015430:Weight Gain; D000067348:Whole Grains
chemical_list: D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins
keywords: BMI; adolescents; diet; longitudinal; monozygotic; twins