The goal of this randomised controlled trial (RCT) is to compare the efficacy of the newly developed 5Ad diet against the widely researched low fermentable oligo-, di-, monosaccharide and polyols (FODMAP) diet in reducing gastrointestinal symptoms associated with functional bowel disorders/food intolerances. The primary aims of this RCT are to determine: * Whether the 5Ad diet is at least as effective as the low FODMAP diet in reducing gastrointestinal symptoms associated with FBDs/food intolerances. * Whether either the 5Ad diet or the low FODMAP diet are effective in reducing mental and physical fatigue. To achieve the above aims, an RCT will be conducted with the 5Ad diet in one arm vs the active phase of the low FODMAP diet in the other arm, in a cross-over design with a 7 days washout phase in between. Both dietary protocols will be followed by each participant for 7 days. Researchers will compare the results from the 2 dietary protocols in order to ascertain the superiority of one over the other in regards to 6 gastrointestinal symptoms (abdominal pain, bloating, flatulence, bowel urgency, straining and incomplete defecation), stool form and frequency of defecation.
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Abdominal Pain
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)
Abdominal Bloating
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)
Flatulence
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)
Bowel Urgency
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)
Straining
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)
Incomplete Defecation
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)
Stool Form
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)
Frequency of defecation
Timeframe: Assessed daily throughout both dietary protocols (7 days for each dietary protocol)