The human body possesses a diverse and abundant repertoire of microorganisms, termed microbiota, occupying distinct internal and external niches. In numerical terms, the bacterial component alone approaches 50 phyla of 1000 species that cover 1014 bacteria per gram of luminal content.
This is the second instalment of my three-part series that investigates how the correlative link between the gut microbiota and our weight has come to be. Obesity is a worldwide epidemiological epidemic and current interventions, both medical and lifestyle, are failing to thwart its increasing prevalence. Part 2 takes a close look at the association between obesity and the gut microbiota. We hold a microscope to a selection of studies that have provided a compelling link between the microbial community and our expanding waistlines.