why is cancer difficult to treat and cure?

Answer 1

It is difficult because your cells normally have functions and die if something goes wrong, when they become cancerous they have gone crazy or mutated and keep multiplying, nothing is telling them to die. Surgery will get it sometimes but there is always a chance they missed some and if even one cell is there it will get out of control again. Radiation kills the cancer cells, but it also kills some good cells too so that is why people get sick and lose their hair. And it is not always efficient.

Answer 2

There are 3 main reasons.

First, cancer cells tend have genetic instability and dedifferentiate. In other words, each generation of cancer cells tend to be more mutated and less like the original cell. That makes further generations resistant to chemotherapy and radiation. Other mutations are also possible. Cancer cells may mutate surface markers that some treatments target. Some mutations may develop an alternate way of performing an essential task targeted by treatment.

Second, cancer spreads (tumors metastisize). Cancer cells may hide in the body espcially in places what chemotherapy may not reach (central nervous system because of the blood-brain barrier).

Third, chemotherapy targets cells that divide. Cancer cells may not divide or divide often enough during treatment. Ironically, faster replicating acute leukemias are easier to treat with chemotherapy than chronic ones as an example.

Answer 3

"Cancer" is a catch all name that has about 200 seperate types!!!!

No one thing is going to treat them all!

Some cancers are rare, which makes t difficult to research them, or to get funding for this research.

Some have treatments that are 99.9999999 cures!

It depends on the cancer.

Anything that fights cancer also fights other cels in the body, so in some cases the treatment requires a fine balancing act or it will do more harm than good.

Answer 4

cancer is difficult to treat and to cure but to prevent is easy...
Since cancerous cells whatever kind of cancer (ovary, breast, skin, brain, liver etc.) spread and multiply rapidly throughout the entire system of an organism so it is difficult to counteract with them.
cancerous cells destroysystems hence immune system is weakened.... they overthrown chaste cells which keep the individual normal.......
it is really difficult to treat and cure cancer if it is serious because complications are there too. but hen there are still human survive from cancers........... it is too difficult to remedy damaged cells caused by cancerous ones so it is not easy to undergo treatment therre's a lot or thing to consider like if you have normal pulse rate etc. you got what i mean....

Answer 5

Curing maximum cancers demands killing or removing each residing maximum cancers cellular interior the physique, and in lots of circumstances it is completely puzzling to hint down each maximum cancers cellular. If any cells are left, the main cancers would return. previous due-point maximum cancers includes maximum cancers spreading to all factors of the physique. while that occurs, it is notably annoying to hint all of it down and kill it. this is why previous due-point maximum cancers ultimately has a tendency to be deadly. some cancers are person-friendly to handle, although. pores and skin maximum cancers is the main user-friendly sort of maximum cancers, and it is truly person-friendly to treatment. The cancerous pores and skin is got rid of, and the affliction is cured. A pores and skin-maximum cancers sufferer is not any lots extra probably to die than somebody with the flu (as long because it is not any longer cancer). The treatment value for pores and skin maximum cancers is so severe that it is in lots of circumstances omitted of information, because of the fact it has a tendency to skew the numbers. usually, any maximum cancers this is extremely localized could be cured by using surgically removing it. much less encapsulated cancers can in particular circumstances be cured by using remedies that attain many factors of the physique and kill the main cancers cells they arrive upon. yet some cancers are the two diffuse and annoying to kill, and are to that end very puzzling to handle. Early scientific care facilitates lots, yet some cancers produce no indications till they are too some distance long previous to treatment (lung maximum cancers is in lots of circumstances like this).

Answer 6

By definition cancerous cells are reproducing faster than normal cells. Chemotherapy, surgery, and other therapies are used to rid the body of these faster reproducing cells, but sometimes a few of them become immune to the therapy or are are not caught during surgery. They can go on to reproduce and the cycle gets repeated.

Answer 7

on the CBS early show on monday 8-27-07 in the morning they are interviewing john kanzius who invented a machine that KILLS CANCER

Answer 8

Cancer cells are very similar to other cells in the human body, cells we need to survive. So far, any treatment that targets cancer cells will also destroy the healthy ones.

Answer 9

because if not noticed, it grows so big and so deadly that no medicine can do much help.