Why is cancer so difficult to cure?

Cancer is difficult to cure mainly because cancer cells possess characteristics such as unlimited proliferation, high potential for metastasis, heterogeneity, ability to evade immune system attacks, and high likelihood of recurrence after treatment. These traits make it hard to completely eliminate cancerous lesions, posing significant challenges to achieving a full cure. If you experience any physical discomfort or symptoms, it is recommended to seek medical attention promptly.

1. Unlimited proliferative capacity of cancer cells: Cancer cells escape normal growth regulation and can divide and proliferate without restraint, continuously forming new tumor tissues. Even if some cancer cells are eliminated, the remaining cells can rapidly reproduce, making complete eradication extremely difficult.

2. High metastatic potential of cancer cells: Cancer cells can spread through the bloodstream or lymphatic system to other organs, forming metastatic tumors. Once metastasized, these cells are harder to detect and eliminate, becoming a major obstacle to curing cancer.

3. Heterogeneity of cancer cells: Within the same tumor, different cancer cells may have genetic and phenotypic variations. This leads to some cells being insensitive to therapeutic drugs, resulting in drug resistance and significantly reducing treatment effectiveness, thus preventing complete elimination of all cancer cells.

4. Evasion of immune system attack: Cancer cells can use various mechanisms to disguise themselves and avoid recognition and destruction by the body's immune system. This allows them to escape immune surveillance, enabling continuous cancer progression.

5. High risk of recurrence after cancer treatment: Even after treatments such as surgery, radiotherapy, or chemotherapy result in tumor disappearance, small numbers of cancer cells may still remain in the body. Under certain conditions, these residual cells can become reactivated and start proliferating again, leading to cancer recurrence and making complete cure difficult.

In daily life, maintain regular作息 (sleep patterns), avoid excessive fatigue, engage in moderate exercise to strengthen physical health, eat a balanced diet rich in fresh fruits and vegetables, avoid carcinogenic factors such as tobacco and alcohol, and maintain a positive mindset to foster a healthy internal environment for the body.