English: Cancer

Cancer is a type of disease where cells grow out of control, divide and invade other tissues. In a person without cancer, cell division is under control. In most tissues, healthy cells divide in a controlled way and copy themselves to create new healthy cells. With cancer, this normal process of cell division goes out of control. Cells change their nature because mutations have occurred in their genes. All the daughter cells of cancer cells are also cancerous.

If the abnormal cells do not invade, but just divide and swell up their original tissue, this is not called "cancer". It is called a tumour. Tumours are usually not a threat to life because they can be cut out. However, some tumours occur in places where they cannot be cut out, and they can be fatal. Some brain tumours are of this type.

The symptoms of cancer are caused by the cancerous cells invading other tissues. This is called metastasis. Metastasis is a process in which cancer cells move through the bloodstream or lymphatic system. When this happens, a person's cancer can be spread throughout his or her body. Eventually those other tissues cannot work as well, and the whole body begins to get worse, and may die.

Cancer can affect anybody at any age. Most types of cancer are more likely to affect people as they get older. This is because as a person's DNA gets older, their DNA may become damaged, or damage that happened in the past may get worse. One type of cancer that is more common in young men, rather than older people, is testicular cancer (cancer of the testicles).

Cancer is one of the biggest and most researched causes of death in developed countries.


Cancer is one of the most common causes of death around the world. It causes about 16% (or one out of every six) of all deaths worldwide, according to the World Health Organization.[1]

Different types of cancer have different causes. Some things are known to cause cancer in a specific body part; other things are known to be able to cause many different types of cancer. For example, using tobacco (smoked or smokeless) can cause many types of cancers, such as lung, mouth, tongue, and throat cancers.[2] Other things that are known to be able to cause cancer – or make a person more likely to get cancer – include: radiation including sunlight and X-rays in large or many doses, and exposure to radiation (for example in a nuclear power plant); chemicals and materials used in building and manufacturing (for example, asbestos and benzene); air and water pollution; eating very little fruits and vegetables; obesity; not enough physical activity; drinking too much alcohol; and certain chemicals commonly used at home.[1] Some cancers can also be caused by some viruses and bacteria.[1] Many people who are exposed to these things do get cancer – but some do not

Other Languages
Afrikaans: Kanker
Alemannisch: Krebs (Medizin)
አማርኛ: ካንሰር
العربية: سرطان
aragonés: Cáncer
ܐܪܡܝܐ: ܬܠܗܝܐ
অসমীয়া: কৰ্কট ৰোগ
asturianu: Cáncanu
Avañe'ẽ: Akytã'ai
azərbaycanca: Xərçəng xəstəliyi
تۆرکجه: سرطان
Bân-lâm-gú: Gâm
башҡортса: Яман шеш
беларуская (тарашкевіца)‎: Рак (захворваньне)
भोजपुरी: कैंसर
български: Рак (болест)
བོད་ཡིག: འབྲས་སྐྲན།
bosanski: Rak (bolest)
brezhoneg: Krign-bev
català: Càncer
čeština: Rakovina
Cymraeg: Canser
dansk: Kræft
davvisámegiella: Boras
ދިވެހިބަސް: ކެންސަރު
डोटेली: कर्कट रोग
Ελληνικά: Καρκίνος
English: Cancer
español: Cáncer
Esperanto: Kancero
estremeñu: Cancru
euskara: Minbizi
فارسی: سرطان
Fiji Hindi: Cancer
français: Cancer
Frysk: Kanker
Gaeilge: Ailse
Gaelg: Kahngyr
Gàidhlig: Aillse
galego: Cancro
客家語/Hak-kâ-ngî: Ngàm
Hausa: Sankara
հայերեն: Քաղցկեղ
Արեւմտահայերէն: Քաղցկեղ
हिन्दी: कर्कट रोग
hrvatski: Rak (bolest)
Ido: Kancero
Ilokano: Kanser
Bahasa Indonesia: Kanker
interlingua: Cancere
íslenska: Krabbamein
Jawa: Kanker
Kapampangan: Cancer
ქართული: სიმსივნე
қазақша: Қатерлі ісік
Kiswahili: Saratani
Kreyòl ayisyen: Kansè
kurdî: Şêrpence
lietuvių: Vėžys (liga)
Limburgs: Kaanker
Luganda: Kokolo
македонски: Рак (болест)
മലയാളം: അർബുദം
मराठी: कर्करोग
მარგალური: კიბო
مصرى: سرطان
Bahasa Melayu: Barah
Mìng-dĕ̤ng-ngṳ̄: Ngàng
монгол: Хорт хавдар
မြန်မာဘာသာ: ကင်ဆာရောဂါ
Nederlands: Kanker
Nedersaksies: Kaanker
नेपाली: क्यान्सर
नेपाल भाषा: क्यान्सर
日本語: 悪性腫瘍
Nordfriisk: Kreeft
norsk: Kreft
norsk nynorsk: Kreft
occitan: Càncer
ଓଡ଼ିଆ: କର୍କଟ ରୋଗ
oʻzbekcha/ўзбекча: Saraton (kasallik)
پنجابی: سرطان
پښتو: سرطان
Patois: Kiansa
Tok Pisin: Kensa
português: Câncer
română: Cancer
Runa Simi: Apanqara unquy
русиньскый: Раковіна
संस्कृतम्: कर्कटरोगः
Scots: Cancer
shqip: Kanceri
සිංහල: පිළිකා
سنڌي: ڪينسر
slovenčina: Zhubný nádor
slovenščina: Rak (bolezen)
Soomaaliga: Kansar
کوردی: شێرپەنجە
српски / srpski: Рак (болест)
srpskohrvatski / српскохрватски: Kancer
Sunda: Kangker
suomi: Syöpä
svenska: Cancer
Tagalog: Kanser
татарча/tatarça: Яман шеш
తెలుగు: కాన్సర్
тоҷикӣ: Саратон
Türkçe: Kanser
українська: Злоякісна пухлина
Vahcuengh: Bingh'aizcwng
vèneto: Càncaro
Tiếng Việt: Ung thư
Võro: Vähktõbi
Winaray: Kanser
Xitsonga: Fukuzana
ייִדיש: קענסער
Zazaki: Qanser
žemaitėška: Viežīs (lėga)
中文: 癌症