Abstract
Obesity is a growing epidemic worldwide. The most frequent cause leading to the development of obesity is an imbalance between energy intake and energy expenditure. The gut microbiota is an environmental factor involved in obesity and metabolic disorders which reveals that obese animal and human subjects present alterations in the composition of the gut microbiota compared to their lean counterparts. Furthermore, evidence has so far demonstrated that the gut microbiota, which influences whole-body metabolism, by affecting energy balance, but also inflammation and gut barrier function, integrates peripheral and central food intake regulatory signals, thereby altering body weight. At the same time, these data suggest that species of intestinal commensal bacteria may play either a pathogenic or a protective role in the development of obesity. Though still a relatively nascent field of research, evidence to date suggests that manipulating the gut microbiome may represent effective treatment for the prevention or management of obesity. Various studies have described the beneficial effects of specific bacteria on the characteristics of obesity. However, the available data in this field remain limited and the relevant scientific work has only recently begun. This review aims to summarize the notable advances and contributions in the field that may prove useful for identifying probiotics that target obesity and its related disorders.
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