Antibiotics increase functional abdominal symptoms
Much evidence, both experimental and anecdotal, point to alterations in the physiology of the GI tract as causative factors in IBS. Impaired digestion, poor diet and abnormal/pathogenic flora are all easily modified factors. Antibiotics greatly alter the balance of the flora in the GI tract, favoring the overgrowth of yeasts. Probiotics should follow EVERY course of antibiotics. I really think that antibiotic resistance is the least of our concerns with antibiotic use–alterations in GI physiology and subsequent systemic alterations are much more common and immediate.