Special Topic – Cancer (Basic Notes)

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What is Cancer?

Cancer is a disease in which body cells grow uncontrollably and form abnormal masses called tumors.

• Normal cells → Controlled growth
• Cancer cells → Uncontrolled growth

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Types of Cancer

• Carcinoma → Skin and organs
• Leukemia → Blood cancer
• Sarcoma → Bones and muscles
• Lymphoma → Lymphatic system

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Causes

• Smoking
• Alcohol consumption
• Radiation exposure
• Genetic factors
• Pollution

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Symptoms

• Unusual lumps
• Weight loss
• Fatigue
• Abnormal bleeding

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Prevention

• Avoid smoking
• Healthy diet
• Regular exercise
• Early screening

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Exam Key Points

• Cancer → Uncontrolled cell growth
• Smoking → Major cause
• Types → Carcinoma, Leukemia
• Prevention → Lifestyle changes

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Awareness is the first step to prevention