1. Unexplained Weight Loss
Losing weight without dieting, exercising, or trying may sound appealing — but it’s often a red flag.
Rapid and significant weight loss can be associated with cancers of the stomach, liver, or pancreas, which interfere with digestion and nutrient absorption.
It can also occur with lung cancer, esophageal cancer, and blood-related cancers such as leukemia and lymphoma, due to increased metabolic demand and systemic inflammation.
If weight loss happens without a clear explanation, medical evaluation is essential.
