2.1. Participants
FUNCTIONAL GASTROINTESTINAL DISORDER
Healthy adults (n = 67) between 18 and 75 years of age (all: 49.9 ± 14.1 years; males: n = 25 53.5 ± 12.9 years; females n = 42 48.8 ± 14.2 years) were recruited via word of mouth and social media announcements. Functional gastrointestinal disorders often exist in people with no attribution to formal medical diagnosis; therefore, inclusion for participation in the study involved meeting modified Rome IV (