(The most common but often ignored sign)
Feeling tired after hard work or little sleep is normal. But when exhaustion lingers and does not improve even after proper rest, it may be a red flag. Chronic fatigue can point to can.cers such as leukemia, colon can.cer, or stomach can.cer. Can.cer cells consume enormous amounts of energy and release inflammatory chemicals that disrupt normal functions, leaving the body in a constant state of weakness, tiredness, and mental fog. If your energy levels drop without reason and you feel drained for weeks or months, don’t dismiss it—consult a healthcare professional.
2. Unexplained and Rapid Weight Loss
Losing a significant amount of weight unintentionally—especially within a short period and without changes in diet or activity—is a classic can.cer warning sign. This symptom is common in can.cers of the pancreas, liver, esophagus, lungs, and stomach. Tumors can increase the body’s metabolism dramatically, causing rapid loss of fat and muscle even if you are eating normally. If you lose more than 5% of your body weight in six months or less without trying, seek medical evaluation right away.
