It may seem strange, but fatigue can also be a warning sign of cancer because it is the natural action of the immune system. Some cancers can also cause blood loss, which also causes fatigue. See your doctor if you feel tired.
Note: Despite these signs mentioned above, be sure to consult your healthcare professional. Reacting in time is of utmost importance, as it increases the chances of attacking the cancer before it infects other parts of the body.
