Comprehensive Assessment of Nutrition and Dietary Intervention in Hypermobile Ehlers Danlos Syndrome

Inclusion Criteria: * Have completed Phase I of the CANDI-hEDS study * Diagnosis of hEDS / HSD according to physical examination and history taking * Diagnosis of Functional Dyspepsia and / or Irritable Bowel Syndrome according to Rome IV criteria * Able and willing to give informed consent * Access to video conferencing and a smart phone device * Able to travel to the Wingate Institute Exclusion Criteria: * Dependent upon artificial feeding (parenteral and enteral) * Structural gastrointestinal disease * Any chronic health condition which already requires a restricted diet e.g. diabetes mellitus * Functional vomiting disorder with associated weight loss * Multiple Type I hypersensitivity reactions to food groups (i.e. anaphylaxis, urticaria, respiratory symptoms or positive RAST tests). * Previous or current severe mental health disorder (e.g. severe depression with suicidal ideation) * Previous or current eating disorder * Positive screen for avoidant restrictive food intake disorder (ARFID)