Pistachio nuts have another effect on the intestine, that is, relaxing bowels. Constipation is also a problem for many people. Pistachio nuts not only promote intestinal peristalsis, digest and absorb food, but also accelerate the excretion of food residues and avoid constipation caused by residue accumulation. Stool will ferment gas for a long time, causing flatulence and even bad breath, so it can also treat bad breath caused by stool.