Multi-omics approaches for precision obesity management : Potentials and limitations of omics in precision prevention, treatment and risk reduction of obesity.

Abstract

Obesity is amultifactorial chronic disease that cannot be addressed by simply promoting better diets and more physical activity. To date, not asingle country has successfully been able to curb the accumulating burden of obesity. One explanation for the lack of progress is that lifestyle intervention programs are traditionally implemented without acomprehensive evaluation of an individual's diagnostic biomarkers. Evidence from genome-wide association studies highlight the importance of genetic and epigenetic factors in the development of obesity and how they in turn affect the transcriptome, metabolites, microbiomes, and proteomes. The purpose of this review is to provide an overview of the different types of omics data: genomics, epigenomics, transcriptomics, proteomics, metabolomics and illustrate how amulti-omics approach can be fundamental for the implementation of precision obesity management. The different types of omics designs are grouped into two categories, the genotype approach and the phenotype approach. When applied to obesity prevention and management, each omics type could potentially help to detect specific biomarkers in people with risk profiles and guide healthcare professionals and decision makers in developing individualized treatment plans according to the needs of the individual before the onset of obesity. Integrating multi-omics approaches will enable aparadigm shift from the one size fits all approach towards precision obesity management, i.e. (1)precision prevention of the onset of obesity, (2)precision medicine and tailored treatment of obesity, and (3)precision risk reduction and prevention of secondary diseases related to obesity.