The Function of food introduction to Nutrients What

The Function of food & introduction to Nutrients

What are we going to talk about? List the three main functions of food. Name the five nutrients. Distinguish between macro and micro nutrients. Explain the main functions of each nutrient. List rich sources for each.

PART 1

Why do you think we eat food? What is their FUNCTION?

unctions of food Food is vital to life as it provides our body with nutrients (important substances) which help it to function properly. We need food to: Main Function grow and stay alive be able to concentrate on our work Main Function give us energy Main Function prevent illnesses and diseases stop us from feeling hungry

s n. F i a M tion c n u unctions of food 1. Food gives us energy for work and for play. This means that from food we get the power so that our body is able to perform: Inward movements, for e. g. our heart beats, our blood circulates, etc. Outward movements, for e. g. when we dance, run, push, etc. Energy also helps to keep our body warm. Energy is stored in our body in the form of fats. It is important to have a layer of fats in our body because: - Ò Fats help to keep us warm Ò It serves as a cushion so that we do not hurt ourselves when we bump, fall, etc. Ò It serves as a ready store of energy when we are in need of it, for e. g. when we are sick and we cannot eat.

It is important not to eat a lot of those foods which give us a lot of energy, for otherwise we grow fat. The amount of energy our body uses depends on the type of activity that we do. What exercise do you practice? 2. Food Helps Us to Grow and Repair Our body is made up of the food we eat. With food our body grows in size. The body grows from that of a baby, into that of an adult. Food also helps us to repair a broken part of the body, for e. g. when we break a leg. Food also helps to regenerate the body cells.

3. Food helps to protect us from disease and controls the working of the body With the help of food our body does not get sick easily and it remains healthy, for e. g. we have healthy hair, healthy skin etc.

We need energy to work and play. Food provides us with energy.

We also need food to grow and to remain healthy by fighting diseases.

So what does food contain?

F_______ is vital to life. It can be Food defined as any s_______ or solid l_______ substance which, when liquid body taken by the b_______, provides it with the necessary materials to help it to grow, to replace wornout and damaged pars, and to function normally.

The human b_______ body is like a complex piece of machinery. It can become w_______ weak if it is poorly maintained. This can happen if too little much l_______ or too m_______ food is eaten, or if the d_______ f_______ daily food intake i_______ is in any way unbalanced.

Food contains NUTRIENTS Which are the important NUTRIENTS?

The Nutrients WHAT ARE NUTRIENTS? Nutrients are substances found in food that provides essential needs for the maintenance and growth of the body.

NUTRIENTS Eating only one type of food will not give our body everything it needs to work, play, grow and fight diseases. This is because our body needs different substances for doing different things. These substances are called nutrients.

Some nutrients provide us with energy, some help us grow and some help us to fight diseases. Different foods have different nutrients. Therefore, to remain fit and healthy, we need to eat different foods.

5 There are _______ nutrients: Protein Carbohydrates Fat Vitamins Minerals

THERE ARE 5 NUTRIENTS Fats Vitamins Proteins Minerals Carbohydrates

These are needed in LARGE amounts by the body. They include Carbohydrates, Protein, Fats. These are needed in SMALL amounts by the body. They include Minerals & Vitamins.

The 5 Nutrients- their function Fats are mainly required for warmth and energy. Proteins are needed for growth and repair. Carbohydrates are mainly required for energy. Vitamins control body functions and protect against diseases. Minerals are needed to protect against diseases.

PART 2

REVISION : Fats Vitamins Proteins Minerals Carbohydrates THERE ARE 5 NUTRIENTS

The 5 Nutrients- The 5 Nutrients their function Fats are mainly required for warmth and energy. Proteins are needed for growth and repair. Carbohydrates are mainly required for energy. Vitamins control body functions and protect against diseases. Minerals are needed to protect against diseases.

Food & Nutrients PROTEINS Proteins are nutrients that our body needs to grow. They are also needed to repair damaged parts of our body. That is why they are called body-building nutrients.

Food & Nutrients PROTEINS Proteins are found in milk, cheese, eggs, fish, meat, pulses, beans and nuts. So I can eat protein either from ANIMAL origin or PLANT origin

Food & Nutrients CARBOHYDRATES Sugars and starches are carbohydrates. They are needed by your body to get quick energy. That is why they are called energy-giving nutrients.

Food & Nutrients CARBOHYDRATES Cereals such as rice, wheat and maize are rich in carbohydrates called Starch. So are foods made from cereals such as bread. Sugar, things containing sugar, even fruit like bananas are rich in carbohydrates.

Food & Nutrients FATS Fats are nutrients that also provide us with energy. They are stored in the body for future use. The energy stored in them is used when the body does not get enough food to eat. Fats also keep our body warm. Oil, butter, cheese and nuts are rich in fats.

Food & Nutrients VITAMINS & MINERALS Vitamins and minerals are nutrients that our body needs in very small amounts. They help our body to work properly and fight disease. They are therefore called protective foods. There are several vitamins and minerals that our body needs.

Food & Nutrients VITAMINS & MINERALS Fresh fruits, vegetables, meat, fish, liver, milk, eggs and bread are rich in vitamins. They contain several minerals also.

y t i v i t c A Now we will go through some pictures showing us the nutrients in different food. Take a close look!

I ENCOURAGE YOU TO GO IN THE FOOD CUPBOARD, CHECK OUT 3 PACKETS OF FOOD AND FOOD CHECK THE NUTRIENTS ON THEM. ARE THEY HEALTHY?