The Role of Dietary Energy and Macronutrients Intake in Prevalence of Irritable Bowel Syndromes

Figure 2

Global prevalence of irritable bowel syndrome (IBS) (data were expressed as mean ± standard error). (a) The prevalence of IBS in Asia, North America, Europe, Australia, Africa, and South America. (b) The prevalence of IBS in 1970-1979, 1980-1989, 1990-1999, 2000-2009, and 2010-present. (c) The age distribution of subjects with IBS. (d) The predominant stool pattern in IBS patients (constipation-predominant IBS [IBS-C], diarrhea-predominant [IBS-D], mixed stool pattern [IBS-M], and unclassifiable [IBS-U]).

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