White stools in the elderly are associated with bile duct blockage, indigestion, and weakness of the spleen and stomach. When food is discharged into the duodenum, the small intestine will secrete bile contraction due to food stimulation in order to stimulate the gallbladder to contract and promote bile discharge to help digest and break down food. However, in the event of bile blockage, the bile is not properly discharged into the duodenum, thus resulting in food residues that cannot be stained by bile pigments, and the stool will then take on its original color, which is vitriol white. As the elderly age, the function of the digestive system is gradually impaired, and many elderly people suffer from indigestion. When indigestion occurs, some food is excreted in a half-digested state, so the color of the stool will appear white. Some elderly people may have a weak spleen and stomach, which may affect the digestion and absorption of food. When elderly people with a weak spleen and stomach have a bowel movement, not only do they have sugar-colored stools, but some of them also have white colored stools.