various adverse consequences.The possible health effects include obesity and type 2 diabetes. A growing body of evidence indicates a connection between circadian disruption and insulin resistance.Building on this, a new study appearing in Cell Host & Microbe shows that diabetes is also associated with changes to the daily rhythms of the gut microbiome.A team of researchers that the Technical University of Munich in Germany led showed that people with type 2 diabetes have fewer daily fluctuations in some of their gut bacteria and that these changes may serve to predict and diagnose the condition.For many years, scientists have known that the circadian clock is crucial to human physiology.