Energy Balance

• Food is a store of energy, transferred from the food to the consumer.
• • 'Food energy' is measured in joules (J) or kilojoules (kJ.)
• Food types (groups) have different amounts of energy.
• Different people need different amounts of energy.
• Food is a store of chemical energy, which is transferred to the consumer when eaten.
• The amount of energy stored in food depends on its type and quantity.
• Each individual requires a specific amount of food, depending on their energy requirements.
• • This energy from plants and animals keeps the consumer alive and allows it to carry out its activities.
• The food groups are carbohydrates, proteins, fats, vitamins, minerals and water.
• The amount of energy a human needs depends on many things, including their age, gender, and activity level.
• Each one of the five food groups is important. All food contains energy.
• Fruit and vegetables contain vitamins to keep the body working and help the immune system and fibre which helps digestion.
• Proteins build healthy muscles and allow the body to grow and repair.
• Fats and oils act as an energy store.
• Carbohydrates keep energy levels up.
• Dairy contains calcium for strong teeth and bones.
• A female needs 2000kcal a day , a male needs 2500kcal a day.
• Energy balance is when the calories taken in equals the calories used up
• If fewer calories are consumed than expended then there will be weight loss
• If more calories are consumed than expended then there will be weight gain