Gene-Lifestyle Interactions in Obesity

Overview

Journal Curr Nutr Rep

Specialty Nutritional Sciences

Date 2014 Jan 7

PMID 24392269

Citations 27

Authors

Jana V van Vliet-Ostaptchouk

Harold Snieder

Vasiliki Lagou

Affiliations

Soon will be listed here.

Abstract

Obesity is a complex multifaceted disease resulting from interactions between genetics and lifestyle. The proportion of phenotypic variance ascribed to genetic variance is 0.4 to 0.7 for obesity and recent years have seen considerable success in identifying disease-susceptibility variants. Although with the advent of genome-wide association studies the list of genetic variants predisposing to obesity has significantly increased the identified variants only explain a fraction of disease heritability. Studies of gene-environment interactions can provide more insight into the biological mechanisms involved in obesity despite the challenges associated with such designs. Epigenetic changes that affect gene function without DNA sequence modifications may be a key factor explaining interindividual differences in obesity, with both genetic and environmental factors influencing the epigenome. Disentangling the relative contributions of genetic, environmental and epigenetic marks to the establishment of obesity is a major challenge given the complex interplay between these determinants.

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