What causes loose or unformed stools?

The causes of unformed stools are relatively complex and mainly related to diet, proctitis, intestinal flora imbalance, spleen and stomach weakness, and excessive dampness in the body. For example, frequently consuming high-fiber foods can promote gastrointestinal motility, leading to rapid stool passage and easily resulting in unformed stools. Additionally, if inflammation occurs in the rectum, it may cause extensive local ulcers. When food passes through, it can irritate these ulcerated areas, causing abdominal pain and accelerated intestinal motility, which leads to rapid stool expulsion and a tendency toward unformed stools.