Table 1.

Inclusion and exclusion criteria for participation in the clinical trial.

Inclusion criteria

Informed consent signed by the study participant

Age ≥ 65 years

Mentally and physically fit to complete questionnaires during the study period

Exclusion criteria

Any known gastrointestinal disease with strictures, malignancies and ischemia

Inflammatory bowel diseases

Participation in other clinical trials in the past three months

Intake of medications known to change the inflammatory status (i.e., proton pump inhibitors, anti-inflammatory medications (including non-steroid anti-inflammatory drugs (NSAIDs))