🏥 How Does Pollution Affect Human Health?
- Pollution introduces harmful substances into the environment—air, water, soil, and food—that can directly or indirectly harm human health.
🫁 1. Air Pollution
- Sources: Vehicle emissions, factories, wildfires, burning fossil fuels
- Harmful pollutants: Particulate matter (PM2.5), carbon monoxide, ozone, nitrogen dioxide
🧠 Health Effects:
- Asthma and breathing problems
- Lung cancer
- Heart disease
- Stroke
- Premature death
🚰 2. Water Pollution
- Sources: Industrial waste, sewage, agricultural runoff, plastic waste
- Pollutants: Heavy metals (like lead and mercury), bacteria, pesticides
💧 Health Effects:
- Stomach infections (diarrhea, cholera)
- Liver and kidney damage
- Nervous system disorders
- Developmental issues in children
🌾 3. Soil Pollution
- Sources: Pesticides, industrial chemicals, improper waste disposal
- Pollutants: Lead, arsenic, mercury, hydrocarbons
🌱 Health Effects:
- Enters food chain through crops
- Can cause cancer, birth defects, and nerve damage
🔊 4. Noise Pollution
- Sources: Traffic, airports, loud machinery
👂 Health Effects:
- Hearing loss
- Stress, anxiety, and sleep disorders
- Increased risk of heart problems
💡 Summary Table:
- Type of Pollution Main Health Effects
- Air Asthma, lung disease, heart problems
- Water Infections, poisoning, organ damage
- Soil Toxin exposure through food, birth defects
- Noise Hearing loss, stress, sleep disturbances
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