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There is a significant relationship between food and nutrition. Food and nutrition are interrelated as a great deal of one connotes the other; it is despicable for one to imagine living healthy without food with good nutritional values. Malnutrition is characterized by inadequate intake of protein, energy and/or micronutrients and by frequent infection and disease. In a developing country like Nigeria hunger and under-nutrition is common, as majority of the citizens do not have enough food to nourish their body so malnutrition rate recorded becomes high. This research work argues if there can be nutrition without food? The body needs a variety of the following nutrients, protein, carbohydrate, fat, vitamins and minerals to stay healthy and productive. To stay healthy we do not only need all the aforementioned five (5) nutrients in our diet but we also need them in the correct quantities to achieve a balanced diet. The consequences of not having a balanced diet are numerous: if we do not eat enough protein, we will not be able to grow properly; if we do not eat enough energy containing foods (e.g carbohydrates and fat), we will feel very tired; and if you eat too much energy containing foods you will become overweight. Food gives us the energy and nutrients to grow and develop, be healthy and active, to move, work, play, think and learn. Therefore, our body needs a variety of the following 5 nutrients – protein, carbohydrate, fat, vitamins and minerals – from the food we eat to stay healthy and productive. This research work concludes that there can be no nutrition without food.



Tittle page


Table of content


The Importance of Food

Physiological Functions of Food

Nutrients that Gives Energy

Essential Nutrients

Classification of Nutrients

Conclusion References




Food is an essential part of every living thing. Food gives humans the energy and nutrients they need to grow and develop, be healthy and active, to move, work, play, think and learn. Food plays a vital role in our lives and is closely associated with human existence. It is probably one of the most important needs of our lives. Although, there are no nutritionally complete foods, this is why variety is recommended. A few basic taste sensations from sugars, starches, fats, and proteins only allow rough assessment of caloric content. Even then, people are fairly inaccurate at judging the energy density of foods (Carels, R. 2007). Food is anything that we eat and which nourishes our body. It is essential because it contains substances which perform important functions in our body. The food that we eat comprises of small units that provide nourishment to the body. These are required in varying amounts in different parts of the body for performing specific functions. This explains why good nutrition is essential for good health. Nutrition is the process by which food is taken in and utilized by the body. Nutrients are the chemical substances present in food and are responsible for nourishing the body. Essential nutrients are compounds that the body can’t make or can’t make in sufficient quantity. According to the World Health Organization, these nutrients must come from food, and they’re vital for disease prevention, growth, and good health. The Importance of Food Basically there are three important functions of food namely; i) Social function ii) Psychological Function and iii) Physiological Function. We will focus more on the Physiological Function of food as it relates the primary objectives of this work. Physiological Functions of Food Food performs three physiological functions in our body. These are energy giving, body building, regulating body processes and providing protection against diseases. 1. Food provides energy: As humans we all need energy to perform every task.


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