NUTR 1010 Chapter Notes - Chapter 1: Joule, Health Professional, Peer Pressure
15 Aug 2018
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Your choice convenience has its cost: scientists measure the energy content of food in kilocalories, which is exactly the same as the popular term. In addition to essential nutrients, food contains substances that are needed by the body but are not essential in the diet: lecithin, for example, is a substance found in egg yolks that is needed for nerve function. Therefore, they are referred to as macronutrients (macro means large): macronutrients: nutrients needed by the body in large amounts. These include water and the energy- yielding nutrients: carbohydrates, lipids, and proteins: vitamins and minerals are classified as micronutrients, because they are needed in small amounts in the diet (micro means small). The amounts required are expressed in milligrams (1 mg = 1/1000 g) or micrograms (1. G = 1/1,000,000 g): micronutrients: nutrients needed by the body in small amounts.
