2. What is Nutrition?
• Nutrition is the science of food, nutrients, and
their impact on health.
• It studies how the body uses food for energy,
growth, repair, and disease prevention.
3. Functions of Food
• Provides energy for daily activities.
• Supports growth and repair of body tissues.
• Helps regulate body processes (digestion,
circulation, immunity).
• Promotes health and prevents disease.
4. Nutrients: The Building Blocks
• Macronutrients: Carbohydrates, Proteins, Fats,
Water.
• Micronutrients: Vitamins and Minerals.
• Each nutrient has a specific role in maintaining
health.
5. Carbohydrates
• Main source of energy (4 kcal/g).
• Found in cereals, bread, rice, fruits,
vegetables, sugar.
• Should provide 50-60% of daily calories.
6. Proteins
• Essential for growth, repair, and maintenance.
• Made of amino acids (essential & non-
essential).
• Sources: meat, fish, eggs, pulses, milk,
soybeans.
7. Fats
• Concentrated energy source (9 kcal/g).
• Helps absorb fat-soluble vitamins (A, D, E, K).
• Sources: oils, butter, nuts, seeds, fish.
• Should be consumed in moderation.
8. Vitamins, Minerals, and Water
• Vitamins: Regulate body functions, prevent
deficiency diseases.
• Minerals: Support bone health, fluid balance,
enzyme functions.
• Water: Essential for hydration, digestion,
circulation, temperature regulation.
9. Malnutrition
• Under-nutrition: Deficiency diseases (anemia,
rickets, marasmus).
• Over-nutrition: Obesity, diabetes,
hypertension, heart diseases.
• Both reduce immunity and lower quality of
life.
10. Balanced Diet
• Includes all nutrients in right proportions.
• Supports growth, development, and overall
health.
• Helps prevent lifestyle diseases.
11. Conclusion
• Nutrition is essential for energy, growth, and
health.
• Balanced diet ensures physical and mental
well-being.
• Good nutrition = Healthy life.
Editor's Notes
#2:Explain that nutrition connects food with body functions and overall health.
#3:Give examples: rice for energy, milk for bone growth, fruits for immunity.
#4:Mention that lack or excess of nutrients leads to health problems.
#5:Explain simple carbs (sugar) vs complex carbs (whole grains).
#6:Highlight importance in children, pregnant women, and athletes.
#7:Distinguish between healthy fats (unsaturated) and unhealthy fats (trans fats).
#8:Examples: Vitamin C prevents scurvy, Calcium strengthens bones, Water keeps body active.
#9:Explain that both under- and over-eating harm health.
#10:Use the food pyramid or healthy plate to illustrate.
#11:Summarize that nutrition is the foundation of good health.
