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[–] Antifa_Hivemind 0 points 5 points (+5|-0) ago 

Understandably, the title of this post does not delve into the complexity of WHY this occurs. Most cancers, if given enough time, WILL kill the patient. And unfortunately, because cancer cells are the patient’s own cells gone awry, treatment is incredibly difficult because you have to find a way to kill the cancer cells without killing the patient.

Many effective chemotherapy medications treat cancer by exploiting cancer cells’ increased rate of division. As a general rule, the more aggressive the cancer (i.e. the more rapidly it divides) the more responsive it is to chemotherapy. This is because chemo drugs interrupt mitosis (or the cell division cycle) by either damaging the DNA directly or disrupting the proteins necessary to replicate it. This leaves the cancer cell unable to replicate and it eventually dies.

Indeed, chemo drugs are effective against cancer cells. HOWEVER, they are not specific to cancer cells, and there in lies the problem. They will also damage the DNA of healthy cells too, and this can lead to the development of new cancers.

No one said chemo drugs were ideal treatments. But if given even a remote chance to live just a while longer, I think most patients would take whatever was recommended, even though it carries such high risks.