कैंसर क्यों होता है ? What causes cancer (In Hindi)

Cancer kyun hota hai? Cancer kaise hota hai?

Cancer ke itne aam hone ki vajah se humare dimaag me isko lekar kaafi sawal aate hain jaise ki ye cancer kya beemari hai, hoti kaise hai aur isse bachne ke liye hume kin kin cheezon se dur rehna chahiye…
To agar aap bhi aasan shabdon me cancer aur uske kaaranon ke baare me jaana chahte hain to ye video aapke liye hai.

what is cancer? what causes cancer?
Cancer is the second leading cause of death globally, and is responsible for an estimated 9.6 million deaths in 2018.
Cancer arises from the transformation of normal cells into tumour cells in a multistage process that generally progresses from a pre-cancerous lesion to a malignant tumour. These changes are the result of the interaction between a person's genetic factors and 3 categories of external agents, including:

-physical carcinogens, such as ultraviolet and ionizing radiation;
-chemical carcinogens, such as asbestos, components of tobacco smoke, aflatoxin (a food contaminant), and arsenic (a drinking water contaminant); and
-biological carcinogens, such as infections from certain viruses, bacteria, or parasites.

Ageing is another fundamental factor for the development of cancer. The incidence of cancer rises dramatically with age, most likely due to a build-up of risks for specific cancers that increase with age. The overall risk accumulation is combined with the tendency for cellular repair mechanisms to be less effective as a person grows older.

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Sources:
https://www.who.int/news-room/....fact-sheets/detail/c
https://www.cancer.gov/about-c....ancer/understanding/
https://stanfordhealthcare.org/medical-
conditions/cancer/cancer/cancer-causes.html
https://www.cancer.gov/about-c....ancer/causes-prevent
https://www.cdc.gov/cancer/kinds.htm
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