Most people with cancer experience weight loss at some point.
Less commonly, fever may be an early sign of cancer, such as in the case of leukemia or lymphoma.
Tiredness is an extreme exhaustion that does not improve with rest.
It can be an important symptom as the cancer progresses.
Constipation, diarrhea, or a change in stool size for a long time may be a sign of colon cancer.
Unusual bleeding can occur in the early or advanced stages of cancer.
Coughing up blood could be a sign of lung cancer.

Avoid smoking, limit consumption of alcoholic beverages, protect your skin from the sun and avoid tanning indoors, have a diet rich in fruits and vegetables, maintain a healthy weight and be physically active.