A sudden, significant drop in weight without changes in diet or exercise could be a warning sign.
Constant, unexplained fatigue that doesn’t improve with rest can be a sign of blood cancer.
Pain that lasts for several weeks, particularly in the bones, back, or head, can be a warning sign.
New lumps or thickened areas under the skin, especially in the breast, testicles, or lymph nodes should be taken seriously, as they could be cancerous.
Changes in moles or skin patches may indicate skin cancer and should be evaluated by a doctor.