Pilar Navarro1, Nitin Shivappa2, James R Hébert2, John Mehegan1, Celine M Murrin1, Cecily C Kelleher1, Catherine M Phillips3. 1. HRB Centre for Health and Diet Research, School of Public Health, Physiotherapy, and Sports Science, University College Dublin, Dublin, Ireland. 2. Cancer Prevention and Control Program, University of South Carolina, Columbia, SC 29208, USA; Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA; Connecting Health Innovations LLC, Columbia, SC 29201, USA. 3. HRB Centre for Health and Diet Research, School of Public Health, Physiotherapy, and Sports Science, University College Dublin, Dublin, Ireland. Electronic address: catherine.phillips@ucd.ie.
Abstract
BACKGROUND & AIMS: The family environment can influence offspring diet and weight status. Obesity is a pro-inflammatory state, which is associated with the dietary inflammatory index (DII®). Predictors of the DII in children (C-DII™) and its associations with childhood obesity are relatively unknown. We evaluated the intergenerational relationships between the energy-adjusted DII (E-DII) scores in adults, predictors of C-DII and associations with childhood weight status. METHODS: The study comprises 551 children and index-child's mothers, fathers and grandparents in the Lifeways Cross-Generation Cohort Study. E-DII scores were generated at baseline for expectant mothers, fathers, and grandparents, and at 5-year follow-up for the mothers and children, using a validated food frequency questionnaire. Body mass index (BMI) and waist circumference were determined at age 5 and 9 years. Associations were assessed by logistic regression and mediation analysis. RESULTS: Higher C-DII scores indicating a more pro-inflammatory diet among children, were associated with greater risk of childhood obesity at age 5 (OR:1.09; 95%CI:1.00-1.37; P = 0.02) and overweight/obese status at 5 and 9 years (OR:1.06; 95%CI:1.01-1.09; P = 0.01 and OR:1.12; 95%CI:1.07-1.18; P = 0.01, respectively). Maternal and paternal smoking during pregnancy (OR:1.98; 95%CI:1.19-3.03; P = 0.001 and OR:1.64; 95%CI:1.12-2.49; P = 0.006, respectively) increased likelihood of higher C-DII at age 5. Child BMI, TV watching and all meals given by the childcare provider were associated with a more pro-inflammatory diet (P < 0.05), whereas breastfeeding and family meals at home were associated with a more anti-inflammatory diet (P < 0.04). Higher maternal, but not paternal, E-DII scores during pregnancy (P < 0.001) and at 5-year follow-up (P = 0.008) were associated with more pro-inflammatory diet at age 5. Results from the mediation analysis suggest that maternal grandmothers E-DII scores may influence C-DII indirectly via the mothers E-DII scores. CONCLUSIONS: A more pro-inflammatory dietary score was associated with childhood overweight and obesity. Parental, familial and personal factors independently influenced the C-DII score.
BACKGROUND & AIMS: The family environment can influence offspring diet and weight status. Obesity is a pro-inflammatory state, which is associated with the dietary inflammatory index (DII®). Predictors of the DII in children (C-DII™) and its associations with childhood obesity are relatively unknown. We evaluated the intergenerational relationships between the energy-adjusted DII (E-DII) scores in adults, predictors of C-DII and associations with childhood weight status. METHODS: The study comprises 551 children and index-child's mothers, fathers and grandparents in the Lifeways Cross-Generation Cohort Study. E-DII scores were generated at baseline for expectant mothers, fathers, and grandparents, and at 5-year follow-up for the mothers and children, using a validated food frequency questionnaire. Body mass index (BMI) and waist circumference were determined at age 5 and 9 years. Associations were assessed by logistic regression and mediation analysis. RESULTS: Higher C-DII scores indicating a more pro-inflammatory diet among children, were associated with greater risk of childhood obesity at age 5 (OR:1.09; 95%CI:1.00-1.37; P = 0.02) and overweight/obese status at 5 and 9 years (OR:1.06; 95%CI:1.01-1.09; P = 0.01 and OR:1.12; 95%CI:1.07-1.18; P = 0.01, respectively). Maternal and paternal smoking during pregnancy (OR:1.98; 95%CI:1.19-3.03; P = 0.001 and OR:1.64; 95%CI:1.12-2.49; P = 0.006, respectively) increased likelihood of higher C-DII at age 5. Child BMI, TV watching and all meals given by the childcare provider were associated with a more pro-inflammatory diet (P < 0.05), whereas breastfeeding and family meals at home were associated with a more anti-inflammatory diet (P < 0.04). Higher maternal, but not paternal, E-DII scores during pregnancy (P < 0.001) and at 5-year follow-up (P = 0.008) were associated with more pro-inflammatory diet at age 5. Results from the mediation analysis suggest that maternal grandmothers E-DII scores may influence C-DII indirectly via the mothers E-DII scores. CONCLUSIONS: A more pro-inflammatory dietary score was associated with childhood overweight and obesity. Parental, familial and personal factors independently influenced the C-DII score.
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