Figure 3 . Top left: Mean stool frequency in healthy subjects from a wide range of studies (n = 39). Ranges of individuals within these studies varied from 0.21 to 2.54 motions per 24 hr. Top right: Mean moisture composition of feces (n = 47). Bottom left: Mean fecal pH values from a range of studies (n = 28) consuming a variety of different diets. Bottom right: Mean volume of total urine excreted (n = 14).
