As the title says, I want to know how does cancer form and expand on the body and why is it so hard to treat sometimes.
Pd: I’m sorry if I wrote something incorrectly, english is not my first language.
In: Biology
The really difficult thing for people to grasp is that random mutations happen all the time. There are so many cells, and so many replications, that just from the huge numbers you’ll get a few defects. The vast majority of defects just mean that the new cell dies, but some of those defects are still viable, like a new mole growing. The body’s immune system will also hunt out abnormalities and treat them as invaders, so there are actually a decent amount of cancers that people develop in their life that are just removed on their own.
But in those great amounts of numbers, sometimes there’s a mutation that still passes as normal, so the immune system doesn’t get rid of it, and it starts manipulating the resources around it.
Some of these we may be lucky enough to just cut off, like melanoma. But if there are any in vital organs, then they need more precise methods like chemicals and radiation.
And the cells are still very similar to your original body, so the radiation and chemical treatments will still do a lot of damage to your body, but hopefully it will do more damage to the cancer and eliminate it.
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