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Jack (Jie) Huang

Jack (Jie) Huang

Dr. Jack (Jie) Huang is a physician-scientist, entrepreneur, and author. He develops the Predictive BioSystems and Predictive Success Science in Deep Tech.

The Cancer Symptoms You Should Never Ignore?

2 min readSep 5, 2026

Cancer can sometimes grow quietly, without obvious warning signs. But certain changes in your body deserve attention — especially when they are new, unexplained, or do not go away.

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A lump or swelling that persists should be checked. So should unexplained bleeding, blood in the stool or urine, a cough or hoarseness that lasts for weeks, difficulty swallowing, or a lasting change in bowel habits. Unexplained weight loss, unusual tiredness, persistent pain, or a sore that does not heal can also require medical evaluation. Changes in a mole — such as its size, shape, or color — should not be ignored. These symptoms do not automatically mean cancer. In fact, many are caused by common, noncancerous conditions. The important issue is persistence or an unusual change from what is normal for you.

Cancer is often easier to treat when found early. Do not wait for symptoms to become severe before discussing a persistent or concerning change with your doctor.

Disclaimer: This article is for educational purposes only and is not medical advice. New, persistent, or concerning symptoms should be evaluated by a qualified healthcare professional.

For a comprehensive Evidence Based Health Insider analysis, visit my in-depth publications at CSTEAM | Predictive BioSystems and AASE | Predictive Success Science: Jack Huang on Substack.

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Jack (Jie) Huang
Jack (Jie) Huang

Written by Jack (Jie) Huang

Dr. Jack (Jie) Huang is a physician-scientist, entrepreneur, and author. He develops the Predictive BioSystems and Predictive Success Science in Deep Tech.