Carbohydrates - Main source of energy, Lipids - An important energy store, Proteins - Functions include enzymes, hormones, antibodies and transport, Balanced diet - Provides all dietary requirements in the correct proportions, Malnutrition - Condition that results from having a diet that is not balanced, Vitamin C - Found in citrus fruits a deficiency causes scurvy, Vitamin D - Needed for the absorption of calcium a deficiency causes rickets, Iron - Mineral needed to produce haemoglobin, Calcium - Mineral needed to strengthen bones and teeth. Deficiency lead to poor clotting of blood and muscle spasms, Water - Liquid that forms 70% of the body. A major constituent of cytoplasm and plasma, Dietary fibre - Indigestible plant cell walls. Needed to maintain a healthy gut and avoid constipation, Glycogen - Complex carbohydrate that stores energy in muscles,

IGCSE Diet

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