1-Fatigue or Weakness
You’re really tired and it’s not cured by rest. This is a big red flag of a sign of anemia that could be caused by loss of red blood cells from leukaemia, colon, or stomach cancer.
As more and more red blood cells are lost, there are not enough healthy cells to transport oxygen to the rest of the body. Without oxygen you’ll feel tired and enervated.
2. Strange Weight Loss or Gain
Losing weight is normally a good thing. But not if you’re not doing anything to lose it. You need to tell your doctor. Loss of appetite can be a side effect of cancer. As your body tries to fight cancer. cytokines are produced. Cytokines decrease appetite.
On the other hand, some cancers can actually cause weight gain. As a cancer tumor grows, fluids can be retained which can lead to weight gain. So be alert for any sudden weight gain or loss that you can’t explain.