what causes cancer? (any form of cancer will do...)?

Answer 1

Cancer in a whole is caused by various defects in the cell cycle of the body. Cell cycle is kinda like an orderly system by which cells divide through meiosis and mitosis. Various defects occur at different stages of the cell cycle leading to things like tumors (a bunch of cells clustered in an area) This is just the basic detail but there's a lot more in depth stuff that at the moment I'm too tired to write but my source is listed below.

P.S: You could always look this up online or just read any biological science textbook or book that talks about cancer.

Answer 2

Cancer is a group of more than 100 different diseases. Cancer occurs when cells become abnormal and keep dividing and forming more cells without control or order.

All organs of the body are made up of cells. Normally, cells divide to produce more cells only when the body needs them. This orderly process helps keep us healthy.

If cells keep dividing when new cells are not needed, a mass of tissue forms. This mass of extra tissue, called a growth or tumor, can be benign or malignant.

Benign tumors are not cancer. They can usually be removed and, in most cases, they do not come back. Most important, cells from benign tumors do not spread to other parts of the body. Benign tumors are rarely a threat to life.

Cancer develops gradually as a result of a complex mix of factors related to environment, lifestyle, and heredity. Scientists have identified many risk factors that increase the chance of getting cancer. They estimate that about 80 percent of all cancers are related to the use of tobacco products, to what we eat and drink, or, to a lesser extent, to exposure to radiation or cancer-causing agents (carcinogens) in the environment and the workplace. Some people are more sensitive than others to factors that can cause cancer.

Many risk factors can be avoided. Others, such as inherited risk factors, are unavoidable. It is helpful to be aware of them, but it is also important to keep in mind that not everyone with a particular risk factor for cancer actually develops the disease. In fact, most do not. People at risk can help protect themselves by avoiding risk factors where possible and by getting regular checkups, so that if cancer develops, it is likely to be found early.

Answer 3

The cancers associated with reproductive organs such as breast, ovarian, cervical & testicular are cause by our hormones. Thats why we desex animals (amongst other reasons) it lessens the likely hood of these such cancers occuring and they only cycle twice a year we do it once a month and therefor are more likely to get these cancers. If we were all desexed prior to pubity all these cancers would be non existant but thats not a realistic solution.
Dogs that are desexed prior to their first season have a chance of 0.05% of getting mammory tumours however after there 1st season it goes up to 20% and then 50% after the next.
I am not sure of the total mechanics of cancer butthought you maybe interested in this.

Answer 4

Inherited susceptibility (about 5% of all cancers), viral infection (like hepatitis promotes liver cancer), chemical carcinogens (pesticides, asbestos), radiation, break down in immunity.
But the cause of cancer is usually multifactoral.

Answer 5

Cancer like symptoms can be found in smokers of tobacco or second hand smokers of tobacco. Porch ashtrays and sloppy environments of chain-smokers are cancerous. Building materials if you don't show caution around, like the dust of dry-board, or, the grit of wet to dry things, if you injest it or unintentionally get poisoned by it. When one for sure has cancer, I think it is mangled and sharp cartialage within (imagine).

Answer 6

cancer occurs when cells mutate. when they do, they replicate. the adjacent cells become defective. it steals nourishment from the body as it grows. Eventually, the body is attacked. When found too late, it spreads and causes harm to the entire body.

Answer 7

smoking causes lung cancer

Answer 8

There are more than 100 types of cancers; any part of the body can be affected.
In 2005, 7.6 million people died of cancer - 13% of the 58 million deaths worldwide.
More than 70% of all cancer deaths occur in low and middle income countries.
Worldwide, the 5 most common types of cancer that kill men are (in order of frequency): lung, stomach, liver, colorectal and oesophagus
Worldwide, the 5 most common types of cancer that kill women are (in the order of frequency): breast, lung, stomach, colorectal and cervical
Tobacco use is the single largest preventable cause of cancer in the world.
One fifth of all cancers worldwide are caused by a chronic infection, for example human papillomavirus (HPV) causes cervical cancer and hepatitis B virus (HBV) causes liver cancer.
A third of cancers could be cured if detected early and treated adequately.
All patients in need of pain relief could be helped if current knowledge about pain control and palliative care were applied.
40% of cancer could be prevented, mainly by not using tobacco, having a healthy diet, being physically active and preventing infections that may cause cancer.
A few types of cancer in non-humans have been found to be contagious ("parasitic cancer"), such as Sticker's sarcoma, which affects dogs. The closest known analog to this in humans is individuals who have "caught cancer" from tumors hiding inside organ transplants.
Most forms of cancer are "sporadic", and have no basis in heredity. There are, however, a number of recognised syndromes of cancer with a hereditary component, often a defective tumor suppressor allele. Examples are:
* certain inherited mutations in the genes BRCA1 and BRCA2 are associated with an elevated risk of breast cancer and ovarian cancer
* tumors of various endocrine organs in multiple endocrine neoplasia (MEN types 1, 2a, 2b)
* Li-Fraumeni syndrome (various tumors such as osteosarcoma, breast cancer, soft-tissue sarcoma, brain tumors) due to mutations of p53
* Turcot syndrome (brain tumors and colonic polyposis)
* Familial adenomatous polyposis an inherited mutation of the APC gene that leads to early onset of colon carcinoma.
* Retinoblastoma in young children is an inherited cancer
There is also a growing body of research that correlates cancer incidence with the lower levels of melatonin produced in the body when people spend more time in bright-light conditions, as happens typically in the well-lit nighttime environments of the more developed countries. This effect is compounded in people who sleep fewer hours and in people who work at night, two groups that are known to have higher cancer rates.
The first such cause of cancer was identified by British surgeon Percivall Pott, who discovered in 1775 that cancer of the scrotum was a common disease among chimney sweeps.
The consensus on diet and cancer is that obesity increases the risk of developing cancer. Particular dietary practices often explain differences in cancer incidence in different countries (e.g. gastric cancer is more common in Japan, while colon cancer is more common in the United States). Studies have shown that immigrants develop the risk of their new country, suggesting a link between diet and cancer rather than a genetic basis.
There are multiple causes of cancers, including:
* Radiation
* Sunlight
* Tobacco
* Certain viruses
* Benzene
* Certain poisonous mushrooms and aflatoxins (a poison produced by organisms that can grow on peanut plants)
However, the cause of many cancers remains unknown.
Please see the web pages for more details on Cancer.

Answer 9

WHO really knows ? they dont dont take any answer because we really dont know and Most of my family have died from cancer.

Answer 10

Exposure to radiation.