Which symptom may indicate the presence of gastric cancer?

Blood in stool can be a significant indicator of gastric cancer and is often a symptom that prompts further investigation. In the context of gastric cancer, the presence of blood in the stool may indicate internal bleeding, which can occur when a tumor in the stomach causes erosion of blood vessels or mucosal lining.

This symptom can arise when cancer affects the gastrointestinal tract, leading to changes in how blood is handled and processed in the gut. Notably, this is not a typical symptom linked with benign conditions, making it an alarming sign that warrants medical evaluation.

The other choices, such as increased appetite, reduced fatigue, and higher energy levels, are generally not indicators of gastric cancer. Increased appetite and higher energy levels can signify good health or improved nutritional status, whereas reduced fatigue typically suggests better overall well-being—none of which align with the typical presentation of gastric cancer.