What Causes墨 Green Stool in Adults?

Bowel movements are a perfectly normal part of daily life. However, sometimes stools appear dark green—a sight that can be alarming. So, what causes dark green stool in adults?

Causes of Dark Green Stool in Adults

Dietary factors: Stool color is heavily influenced by diet. Consuming large amounts of green vegetables—such as spinach, celery, or Chinese chives—can cause stool to turn dark green. This is a benign, physiological change and requires no specific intervention.
Indigestion: Reduced gastrointestinal digestive and absorptive capacity leads to incomplete nutrient absorption. When bile in the stool undergoes oxidation, it may also result in a greenish hue. Symptomatic treatment with digestive aids—such as multienzyme tablets or Jianwei Xiaoshi Pian (a traditional Chinese digestive remedy)—may be considered. However, patients should consult a qualified physician before initiating any medication. Additionally, dietary adjustments to support gastrointestinal function are essential: avoid raw, cold, greasy, or spicy foods, and refrain from overeating or binge eating.

Stool color, consistency, and odor can serve as important indicators of overall health. Normal stool is typically yellowish, banana-shaped, non-sticky, and mildly odorous. If abnormalities are observed, prompt medical evaluation—including gastroscopy and other relevant tests—is recommended to prevent disease progression or complications.

Adults should carefully monitor changes in their stool during daily life to promptly assess their health status and take appropriate action. Moreover, cultivating healthy dietary habits is crucial. Avoid excessive stress and chronic sleep deprivation, both of which contribute to maintaining optimal physical health and reducing the risk of adverse effects. We hope this information proves helpful!