Cancer is a major global health concern, but it is important to approach possible symptoms with care and perspective. Many symptoms sometimes associated with cancer are common and are far more often caused by infections, injuries, digestive conditions, hormonal changes, stress, or other non-cancerous health issues. A symptom alone cannot diagnose cancer.This guide explains common warning signs that should be discussed with a clinician, the role of cancer screening, and practical steps people can take to protect their health. It is educational information and not a substitute for personal medical advice.
What Is Cancer?
Cancer is a broad term for diseases in which certain body cells grow in an uncontrolled way. Healthy cells normally grow, divide, and die in an orderly process. Cancer can develop when genetic changes disrupt this process, allowing abnormal cells to multiply. Some cancers can form solid tumors, while others, including many blood cancers, may not form a tumor.
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