Non-invasive investigation of inflammatory bowel disease

Table 1 Some conditions reported to be associated with increased intestinal permeability

Nonsteroidal anti-inflammatory drugs	Inflammatory bowel disease
Alcohol	Ankylosing spondylitis
Renal failure	Coeliac disease
Abdominal radiation	Intestinal ischaemia
Cytotoxic drug treatment	Hypogammaglobulinaemia
Abdominal surgery	HIV infection
Fasting	Endotoxinaemia
Total parenteral nutrition	Multiorgan failure
Food allergy	Diabetic diarrhoea
Multiple sclerosis	Scleroderma
Cystic fibrosis	Reactive arthritis
Recurrent abdominal pain of childhood	Intestinal infections/bacterial overgrowth
Neomycin	Whipples disease
Acute and chronic liver disease	Sarcoidosis