Question
What are carcinogens? Describe their categories.
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Answer
Cancer causing agents are called carcinogens which may be physical, chemical or biological:
- Ionising radiations like X-rays and gamma rays and non-ionising radiations like UV cause DNA damage leading to oncogenic transformation.
- Chemical carcinogens are caffeine, nicotine.
- Some viruses are also act as carcinogen, are called oncogenic viruses.
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