Fat, so often maligned, is actually an incredibly valuable nutrient. It’s a concentrated source of energy, providing more than double the energy of protein or carbohydrate. It’s also the carrier for the fat-soluble vitamins A, D, E and K . But, perhaps most importantly, it provides your body with fatty acids. Fatty acids come in four flavours: monounsaturated, polyunsaturated, saturated and trans fats. Diets high in saturated and/or trans fatty acids have been linked with a range of health problems, including coronary heart disease. But the other two types; monounsaturated and polyunsaturated, are considered ‘healthy’ fats: • Polyunsaturated fatty acids consist of...