mall intestine bacteria overgrowth (SIBO), Helicobacter pylori (H pylori) infection, and other gastrointestinal disorders are prevalent in rosacea patients and are suspected in the pathogenesis of rosacea. There isn’t a clear-cut mechanism and ubiquitous finding, i.e. not all rosacea patients have H pylori overgrowth, or SIBO, but there is a connection between gut health and rosacea. A 2015 study found that bacterial overgrowth of H pylori was significantly higher in patients with rosacea than healthy controls. A December 2017 meta-analysis study found some benefit of H pylori treatment in rosacea patients, but failed to fully and substantially explain the pathology, which means that there is more to the story.