FOOD AND ITS FUNCTION
What is food? The term food refers to anything which nourishes the body. It would obviously include solids, semi-solids and liquids which can be consumed and which help to sustain the body and keep it healthy. We all know that food is our basic necessity. Have you ever wondered why? Food is essential because it contains substance which performs function in our body. These essential substances contributed by our food are called nutrients. If these nutrients are not present in our food in sufficient amount, the result is ill health. Functions of food We are now familiar with the fact that food consist in part of various nutrients. There are over forty essential nutrients which are supplied by the food we eat. These nutrients can be classified into five major categories. 1. Proteins 2. Carbohydrates 3. Fats 4. Vitamins 5. Minerals Water is important as a nutrients as well as a food. Physiological Function The physiological function performed by food are the energy-giving, body-building, p...