Human Health and Lifestyle IGCSE Biology: Complete Guide

🏃‍♂️ Understanding Health and Lifestyle in IGCSE Biology

Health depends on lifestyle choices including diet, exercise, and habits. This guide covers nutrition, fitness, and disease prevention.

🧠 Memory Tips

Balanced Diet: “Carbs Proteins Fats Vitamins Minerals Water Fiber”

• Carbohydrates: Energy source
• Proteins: Growth and repair
• Fats: Energy storage, insulation
• Vitamins: Prevent deficiency diseases
• Minerals: Body functions
• Water: All body processes
• Fiber: Digestive health

Health Factors: “Diet Exercise Sleep Stress Hygiene”

• Diet: Balanced nutrition
• Exercise: Physical fitness
• Sleep: Rest and recovery
• Stress: Mental health
• Hygiene: Disease prevention

📚 Key Concepts

Balanced Diet

• Macronutrients: Carbs, proteins, fats
• Micronutrients: Vitamins, minerals
• Water: Essential for all processes
• Fiber: Digestive health

Exercise Benefits

• Cardiovascular: Stronger heart, better circulation
• Muscular: Increased strength, endurance
• Skeletal: Stronger bones
• Mental: Reduced stress, better mood

Disease Prevention

• Infectious diseases: Hygiene, vaccination
• Non-infectious diseases: Lifestyle choices
• Risk factors: Smoking, poor diet, lack of exercise
• Prevention: Healthy lifestyle choices

Lifestyle Diseases

• Heart disease: Poor diet, lack of exercise
• Diabetes: Obesity, poor diet
• Cancer: Smoking, poor diet, genetics
• Obesity: Excess calories, lack of exercise

🎯 Exam Focus

Common Questions:

1. Describe components of balanced diet (5 marks)
2. Explain benefits of exercise (4 marks)
3. Discuss disease prevention methods (4 marks)
4. Analyze lifestyle factors and health (6 marks)

Key Relationships:

• Diet and disease prevention
• Exercise and cardiovascular health
• Lifestyle choices and life expectancy

🚀 Master Health and Lifestyle

Excel in health biology with comprehensive nutrition and lifestyle studies.

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