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Associations between FTO genotype and total energy and macronutrients intake: a systematic review and meta-analysis

Livingstone, K., Celis-Morales, C., Lara, J., Ashor, A., Lovegrove, J., Martinez, J., Saris, W., Gibney, M., Manios, Y., Traczyk, I., Drevon, C., Daniel, H., Gibney, E., Brennan, L., Bouwman, J., Grimaldi, K. and Mathers, J. (2015) Associations between FTO genotype and total energy and macronutrients intake: a systematic review and meta-analysis. Obesity Reviews, 16 (8). pp. 666-678. ISSN 1467-789x

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To link to this item DOI: 10.1111/obr.12290

Abstract/Summary

Risk variants of the fat-mass and obesity-associated (FTO) gene have been associated with increased obesity. However, the evidence for associations between FTO genotype and macronutrients intake has not been reviewed systematically. Our aim was to evaluate potential associations between FTO genotype and intakes of total energy, fat, carbohydrate and protein. We undertook a systematic literature search in Medline, Scopus, EMBASE and Cochrane of associations between macronutrients intake and FTO genotype in adults. Beta coefficients and confidence intervals were used for per-allele comparisons. Random-effects models assessed the pooled effect sizes. We identified 56 eligible studies reporting on 213 173 adults. For each copy of the FTO risk allele, individuals reported 6.46 kcal/day (95% CI: 10.76, 2.16) lower total energy intake (P=0.003). Total fat (P=0.028) and protein (P=0.006), but not carbohydrate intakes, were higher in those carrying the FTO risk allele. After adjustment for body weight, total energy intakes remained significantly lower in individuals with the FTO risk genotype (P=0.028). The FTO risk allele is associated with a lower reported total energy intake and with altered patterns of macronutrients intake. Although significant, these differences are small and further research is needed to determine whether the associations are independent of dietary misreporting.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Institute for Cardiovascular and Metabolic Research (ICMR)
Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Human Nutrition Research Group
ID Code:39978
Publisher:Wiley-Blackwell

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