Fecal Microbiota Transplantation for Irritable Bowel Syndrome Associated Food Intolerance

Inclusion Criteria: * Adults, age 18-75 years, knowledge of the Finnish language * IBS patients have been diagnosed with the Rome IV- criteria, all IBS-subtypes will be accepted to the trial * The patient must consume low FODMAP diet to control IBS symptoms * Patient must sign the informed consent Exclusion Criteria: * Diagnosed allergies to food components in the study dietary protocol * Pregnancy and breastfeeding * Antibiotic treatment less than three months prior enrolment * Faecal incontinence, i.e., inability to retain enema * Abuse of drugs, alcohol or medications * Other diagnosis besides IBS causing GI symptoms, these include IBD, microscopic colitis, coeliac disease and bile acid diarrhoea. * Severe psychiatric or neurologic condition decreasing patient's compliance