Carbohydrates provide energy.
Fats provide insulation.
Proteins for growth and repair.
Vitamins. Vitamin C needed for healthy connective tissue.
Minerals. Iron needed to make haemoglobin.
Water is needed for hydration.
Obesity is defined as 20 percent over recommended weight.
Too much fatty food and too little exercise.
Increases risk of cancer, diabetes and coronary heart disease.