“…Among the nine CPGs that mentioned physical exercise, six gave weak recommendation[38,40-42,44,48], and three considered there to be insufficient evidence[37,43,45]. In addition, of the nine guidelines that referred to increased fluid intake, five provided weak recommendation[35,38,41,42,44], and the other four reported insufficient evidence[37,43,45,48]. With regard to increasing dietary fiber, two guidelines recommended that consuming food with a high soluble fiber content could benefit mild constipation[43,48].…”