Abstract

Obesity, as a chronic disease influenced by multiple factors, has been steadily increasing worldwide in recent years. Researchers have started to investigate the relationship between gut microbiota and obesity, and significant differences have been observed between the gut microbiota of obese patients and that of healthy individuals. These differences primarily involve an increase of Phylum Firmicutes and the decrease of Phylum Bacteroidetes, among others. Individuals with severe obesity often choose bariatric surgery as a means of achieving weight loss. Studies have shown that bariatric surgery can alter the composition of the gut microbiota, thereby impacting the host’s body weight. However, the specific effects of different types of surgeries on the gut microbiota composition vary.

Keywords:Bariatric surgery; Gut microbiota; Obesity