3. Fatigue & Tiredness

Everyone gets unusually tired once in a while, but if the feeling of tiredness doesn’t go away even with plenty of rest, consult your doctor immediately. When the cancer starts attacking the healthy cells in your body, your immune system gets affected, which in turn slows your body down. This is shown externally through fatigue and tiredness.

Fatigue as an early sign of the disease is seen in cases of leukemia, or stomach and colon cancers.