Is it normal for an adult’s stool to be green?

Green stool in adults is also considered a normal phenomenon. Under normal circumstances, adult stool is typically yellowish-brown, and its color can be influenced by diet. For example, consuming large quantities of green leafy vegetables may result in undigested vegetable residue passing through the digestive tract and being excreted along with other food remnants—this may occasionally cause stool to appear green.

Aside from dietary factors, green stool may also occur due to “excess internal heat” (a traditional Chinese medicine concept). In such cases, consuming heat-clearing medications or foods may help. Additionally, maintaining adequate hydration and avoiding spicy foods in daily life can prevent “internal heat” accumulation—and thereby prevent green stool.

Green stool may also indicate underlying gastrointestinal disorders. If this is suspected, appropriate medications—or prompt medical evaluation at a hospital—should be pursued. For instance, domperidone (a prokinetic agent) may be used under medical guidance. Individuals concerned about their health should consider undergoing diagnostic testing. Notably, if green stool results from gastrointestinal bleeding, immediate treatment is essential to avoid missed diagnosis and ensure timely, effective intervention.