人若死了，癌细胞也就死了。癌细胞为何要选择与人类同归于尽？难道就不能共存吗？其实这并非癌细胞的本意，它也只是为了活命才被迫杀死人类的。因为人体的每个细胞都有属于自己的寿命，就像血液中红细胞的寿命大约只有120天。当生命走到尽头，红细胞也只能衰老死去，这是身体内所有细胞都不能逃脱的宿命。
不过在我们身体里足足有近50万亿个细胞，总会有那么几个细胞在即将衰老死亡的时候对这个世界恋恋不舍，不想就这么离开了。而且离死亡越近，它的这种欲望越强烈，于是就选择了反抗，拼了命的挣扎，最后竟然激发出了自身的变异能力。
虽然每个人的身体中都有癌细胞存在，但因为身体的免疫系统时时刻刻都在巡视，一旦发现癌细胞，免疫系统就会用尽全力将它杀死，誓死保护我们的身体。但免疫系统也会有累的时候，这时若是被癌细胞侥幸躲过去，它就会疯狂掠夺身体的营养物质，并开始无限增殖，成为一个"不死细胞"，最后发展成一个邪恶的肿瘤。此时就算免疫系统发现了它，已无济于事了。
不过癌细胞其实并没有想过要杀掉宿主，因为你会发现，癌细胞虽然是与人类同归于尽了，但它们本来就是即将要死亡的细胞，只是发生了异变才没有死成。而出于生存的本能，癌细胞就会肆无忌惮侵占正常的器官组织，破坏掉它们的功能。
在这场大约几个月或几年的资源掠夺战中，身体始终处于劣势，直到人类癌症晚期，身体彻底倒下，它才会一同死去。虽然这看似是一场玉石俱焚的争斗，但对癌细胞来说，这并不是同归于尽。就如同战场上濒临死亡的士兵，拉响了手中的最后一颗手雷，死也要拉上一个垫背的敌人。
其次癌细胞没有智慧，并不知道自己的过度掠夺，最终会导致自己与宿主都走向了死亡。所以说：其实癌细胞并不想死去，只是连累了一个本不该死亡的人。
When a person dies, the cancer cells also die. Why do cancer cells choose to perish with humans? Can't they coexist? In fact, this is not the intention of cancer cells; they are only forced to kill humans in order to survive. Every cell in the human body has its own lifespan, just like the lifespan of red blood cells in the blood is only about 120 days. When life comes to an end, red blood cells can only age and die, which is an inevitable fate for all cells in the body.
However, there are nearly 50 trillion cells in our bodies, and there will always be a few cells that are reluctant to leave this world when they are about to age and die. The closer they get to death, the stronger their desire becomes, so they choose to resist and struggle desperately. In the end, they even activate their own mutation ability.
Although every person's body contains cancer cells, the immune system is constantly patrolling. Once it detects cancer cells, the immune system will do its best to kill them to protect our body. But the immune system can also get tired, and if the cancer cells are lucky enough to avoid detection, they will start to plunder nutrients from the body and begin unlimited proliferation, becoming "immortal cells" and eventually developing into an evil tumor. At this point, even if the immune system discovers them, it is too late.
Cancer cells actually do not intend to kill their host because you will find that although cancer cells die with humans, they were originally cells that were about to die but did not due to mutations. Out of the instinct to survive, cancer cells will recklessly invade normal organ tissues and destroy their functions.
In this resource plundering battle that lasts for months or years, the body is always at a disadvantage until the late stage of human cancer, when the body completely collapses and it dies along with it. Although this seems like a mutual destruction, for cancer cells, it is not a case of dying together. It's like a soldier on the verge of death on the battlefield pulling the last grenade in his hand, determined to take down an enemy even in death.
Moreover, cancer cells do not have intelligence and do not know that their excessive plundering will ultimately lead both themselves and their host to death. So it is said: In fact, cancer cells do not want to die; they only implicate someone who should not have died.
