Classes of Food and Importance of Food Nutrients - JSS1 Physical and Health Education Lesson Note

Carbohydrates

Importance: Carbohydrates are the body's main source of energy. They are broken down into glucose, which fuels bodily activities.

Sources: Grains (wheat, rice, oats), vegetables (potatoes, corn), fruits (bananas, apples), and legumes (beans, lentils).

 

Proteins

Importance: Proteins are essential for building and repairing tissues. They are vital for muscle development, immune function, and production of enzymes and hormones.

Sources: Meat (chicken, beef), fish, eggs, dairy products (milk, cheese), legumes (beans, lentils), nuts, and seeds.

 

Fats and Oils

Importance: Fats provide a concentrated source of energy, help absorb fat-soluble vitamins (A, D, E, K), and are crucial for cell membrane structure and hormone production.

Sources: Oils (olive, canola), butter, avocados, nuts, seeds, fatty fish (salmon, mackerel), and dairy products.

 

Mineral Salts

Importance: Minerals are necessary for various body functions, including bone formation, blood clotting, muscle contraction, and maintaining fluid balance.

Key Minerals and Sources:

Calcium: Dairy products, leafy greens, fortified foods.

Iron: Red meat, poultry, fish, lentils, spinach.

Potassium: Bananas, oranges, potatoes, tomatoes.

Magnesium: Nuts, seeds, whole grains, leafy greens.

 

Vitamins

Importance: Vitamins are organic compounds required in small amounts for various biochemical functions. They help with immune function, energy production, and cell growth.

Types and Sources:

Vitamin A: Carrots, sweet potatoes, spinach.

Vitamin C: Citrus fruits, strawberries, bell peppers.

Vitamin D: Sunlight exposure, fortified milk, fatty fish.

Vitamin E: Nuts, seeds, vegetable oils.

Vitamin K: Leafy greens, broccoli, Brussels sprouts.

 

Water

Importance: Water is essential for all life processes. It helps with digestion, nutrient absorption, waste elimination, temperature regulation, and maintaining fluid balance.

Sources: Drinking water, fruits (watermelon, oranges), vegetables (cucumbers, lettuce), and other beverages.