Inclusion Criteria:

- Patient groups: Disease diagnosis (CD or UC),duration of disease, previous/type of
treatments, duration of treatment and disease prognosis.

- Healthy controls: No diagnosis of CD or UC and no diagnosis of IBS.

Exclusion Criteria:

- Patient groups: Drugs that directly affect components of 5-HT signaling, any other
disease or condition that may interfere with study assessments as judged by the
investigator.

- Healthy controls:Chronic use of any anti-inflammatory drugs, drugs that directly
affect components of 5-HT signalling and any other disease or condition that may
interfere with study assessments as judged by the investigator.