Table 3.

The most prevalent new gastrointestinal and nutritional diagnoses made in the GIANT clinic.

DiagnosisPrevalence, n (%)
(n = 325)
Small intestinal bacterial overgrowth151 (46)
Vitamin D deficiency124 (38)
Bile acid malabsorption90 (28)
Gastritis72 (22)
Radiation-induced telangiectasia resulting in rectal bleeding65 (20)
Vitamin B12 deficiency55 (17)
Weak pelvic floor musculature55 (17)
Gastrointestinal polyp requiring polypectomy43 (13)
Trace element deficiency37 (11)
Hiatus hernia35 (11)
Diverticular disease34 (10)
Excessive dietary fibre intake30 (9)
Oesophagitis23 (7)
Iron deficiency anaemia22 (7)
Pancreatic insufficiency16 (5)
Faecal loading16 (5)
Induced by proton pump inhibitor16 (5)
  • Data are n (%). GIANT = gastrointestinal and nutrition team.