It seems antibiotic treatment may help relieve - and even eliminate - symptoms, researchers said.
Small intestinal bacterial overgrowth was found in 78 per cent of patients in a study conducted at the Cedars-Sinai Medical Center, Los Angeles, California, USA.
Researchers studied 202 patients using a specialized breath test.
Antibiotic treatment was tested on 47 patients and eliminated the overgrowth in 25 of them.
12 out of 47 patients reported being free of IBS symptoms after antibiotic treatment.
Researchers said there was a "significant reduction" in symptoms among patients treated with antibiotics.
Twelve patients reported being free of IBS symptoms.
Researcher Dr Mark Pimentel said, "Our research shows that the majority of patients we evaluated with IBS had excessive bacteria in the small intestine, and that treatment with antibiotics greatly reduced the gastrointestinal symptoms of this condition."
Report Copyright: Englemed Health News at http://www.internationalmedicalnews.com