Which of the following is a common sign of cancer?

Unexplained weight loss is a well-documented common sign of cancer, and it often serves as an important indicator that something may be wrong in the body. This weight loss can occur suddenly and without any changes in diet or exercise, signaling that the body is utilizing energy reserves due to the presence of cancer. In many cases, cancer can alter metabolism, lead to loss of appetite, or cause the body to expend more energy fighting the disease, contributing to this symptom.

In the context of oncology nursing, recognizing unexplained weight loss is crucial for early detection and management of potential cancer or treatment-related concerns. Proper assessment and monitoring of a patient's weight and nutritional status are integral aspects of cancer care, as they can impact the patient's overall health, treatment options, and quality of life.