i've very little experience with cancer. my uncle whom i was very close with died from cancer but he really wanted to die after loosing his wife. he prayed to god to take him and within a week he was diagnosed with cancer. i nursed him but ended up attending to his immediate family who did not want him to die, dealing with their grief and the way they held on to him. 
i read him the tibetan book of living and dying and ended up reading it to them. when he died his family had already let him go and it was quite beautiful.
but to be honest i still don't know what cancer is, i just assumed it was something people got, people who suppress emotions, people who deal in meat and artificial foods, people who sunbake at midday for hours, i just put it aside and never considered it, but recently a friend, someone i don't really know at all yet feel very close to told me she had some sort of cancer removed.
it bugged me, this is a great person, one of those once in a lifetime peoples, how can she have suffered cancer, it's not fair, neither is it just. it's sent me into a depression, on top of my stupid worries about money and shit, here's some thing in the world that just attacks random people. i wanted to say something constructive but i'm at a loss, this person lives a good life, has a beautiful heart, really, there is nothing as evil as cancer when you think about it.
it's everywhere isn't it? it's an indiscriminate enemy of life. 
i looked up and did a little research but still i'm baffled.
the only way i can see that we can evade this is to remove ourselves from cities, radiation technology, artificial food and contaminated water and artificially induced stress.
its possible to reverse and cure cancer, i met some people whom did this with plants, ayahuscia being the most effective but the seed inside apricot kernels are very effective although illegal to take, i met people who cured bowel cancer with them. yesterday i was reading about a berry called poke berry, apparently it is really effective but you need to take the correct dose. it's illegal almost everywhere except australia.
why are these things illegal?
especially if they heal people!
the answer is sinister and obvious, the drug company don't want healthy people, it's a trap, hook up to the pharmaceutical model and stay sick, take a chance with nature and there's hope but they jail you for it.
what the fuck.
stop the world, i wanna get off, the world of man is enough to give you cancer if you think about it!
i hope my friend is okay, outta all the people i know, she's the sunshine in our lives, even from this distance.