Objective: This review summarizes the current understanding of the relationship between gut microbiota and the host as it pertains to the regulation of energy balance and obesity.
Methods: The paper begins with a brief description of the gut microbiota environment, distribution, and its unique symbiotic relationship with the host. The way that enviromental factors influence microbiota composition and subsequent impact on the host are then described. Next, the mechanisms linking gut dysbiosis with obesity are discussed, and finally current challenges and limitations in understanding the role of gut microbiota in control of obesity are presented.
Results: Gut microbiota has been implicated in regulation of fat storage, as well as gut dysbiosis, thus contributing to the development of obesity, insulin resistance, hyperglycemia and hyperlipidemia. However, the underlying mechanisms of these processes are far from being clear and will require complex preclinical and clinical interdisciplinary studies of bacteria and host cell-to-cell interactions.
Conclusions: There is a need for a better understanding of how changes in gut microbiota composition can impact energy balance and thus control weight gain. This may represent a promising avenue in the race to develop nonsurgical treatments for obesity.
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