Common cancer symptoms: What signs can help you detect cancer early? | Dr William Li

I have often observed that the most important conversations happen when a patient notices a small, subtle change in their body before it becomes a major problem. Cancer is often called an "insidious" disease because its early stages are frequently quiet and painless. However, your body often sends "whispers" long before it starts to shout. In this video, I explain the biological reasons behind early symptoms and walk you through 7 critical warning signs—from persistent "B-symptoms" like night sweats and weight loss to specific changes in the skin, digestion, and reproductive health. My goal is not to cause panic, but to provide you with the professional sensitization needed to take charge of your health. Remember, early detection is the most powerful tool we have in modern medicine. What we cover in this video: The biology of how cancer starts quietly in the tissues. Systemic "B-symptoms" (Weight loss, night sweats, fatigue). Understanding lymph node swelling: When to worry. Subtle skin changes and non-healing wounds. Digestive red flags and respiratory changes. Gender-specific symptoms for both men and women. The information provided in this video is for educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have heard or seen in this video. The patterns discussed are general observations from clinical practice and may not apply to every individual case.