Gastrointestinal motility disorders (GMD) and disorders of gut brain interactions (DGBI) include a wide spectrum of disease conditions, and it's relatively common in the general population. GMDs and DGBIs may be caused by impaired movement of muscles in the digestive system, impaired or oversensitive nerve signaling between the gut and brain, bacterial overgrowth, intolerance to certain foods, altered anatomy, or more. The purpose of this study is to collect and store data and samples, such as blood and saliva, for future research about GMD and DGBI. The study plans to enroll up to 5,000 participants, including patients with or without GMD and DGBI.