Pelvic PT Distance Journal Club
September 7, 2016
Jane O’Brien Franczak, PT, MSPT
Summary: This article is a review of
pathophysiologic mechanisms that may explain IBS food related symptoms (sx) and
evaluates clinical trials of specialized diets used to treat IBS sx.
Premise: Food can cause GI distress due to
stimulation of mechanoreceptors and chemoreceptors (ie capsaicin) or
alterations in GI transit, intestinal osmolarity and secretion. IBS patients
report more food related issues than healthy controls
What causes food
symptoms? :
Food Allergies
1. IgE mediated = Rapid onset, ie nuts, wheat,
shellfish, strawberries.
Sx of nausea, dysphagia, abdominal pain, vomiting,
diarrhea (urticaria)
2. Non IgE -mediated : cell mediated response (T
helper 2 cells), delayed onset, IgG antibodies are more prevalent with IBS pts.
Sx= GI only.
Food Intolerances
Non- immunologic events, (non-celiac gluten sensitivity,
presence of chemicals in foods, histamine, enzyme defects, short chain
carbohydrates.)
70% of IBS patients report symptoms representative of
food intolerances.