Gut bacteria alteration in obese people and its relationship with gene polymorphism

Figure 2 Stool form scale in obese and normal-weight groups. A substantial difference was observed in the stool form scale between the obese and normal-weight groups (U = 1062, P < 0.05). A greater number of participants in the normal-weight group demonstrated a type 2 (stools exhibiting a smooth snake or sausage shape with cracks in the surface) and type 3 (stools appearing in separate, hard lumps or even in a nut-like form) stool form compared with their obese counterparts (42 vs 34, 3 vs 1).