FOOD AND ITS IMPORTANCE 1 The food we

FOOD AND ITS IMPORTANCE: 1) The food we take in makes up our diet. 2) The food we eat is important for the following purposes: - for growth - for repair damaged tissues - to provide energy for work, movement and keeping warms. - to maintain health remember: G. R. E. H.

Substances in our diet 1. The process of taking food into the body and using it for the living parts of the body is known as nutrition. 2. The food we eat is made up of three main components: I. Nutrients II. Water III. Fibre

I. Nutrients 1. 2. 3. 4. 5. Carbohydrates Fats Protein Vitamins Minerals

1 2 CARBOHYDRATES salmon 3 FATS &OILS PROTEINS

1. CARBOHYDRATES Present in food to give us ENERGY. Example of carbohydrates are STARCH and SUGARS. There are many kinds of sugars such as GLUCOSE and SUCROSE. 2. FATS & OIL IMPORTANT source of energy. They give us TWICE as much Energy as carbohydrates. FATS are usually SOLIDS. 3. PROTEIN -Used for growth and repair of worn-out tissues. When a fat is LIQUID, it is called an OIL.

4. Vitamins Vitamin Sources Uses Diseases A Milk, butter, green vegetables, carrots, fish liver oil For healthy skin and eye Night blindness B Milk, fish, bread, green vegetables, yeast, soya beans For healthy nervous system Beri-beri C Oranges, lemons, tomatoes, green vegetables - For healthy blood, - For healthy gum, - For healthy teeth - some protection from cold Scurvy D Milk, eggs, cheese, butter, fish liver oil To make strong bones and teeth Rickets

5. Minerals MINERAL SOURCES USES DISEASES CALCIUM Milk, cheese, green vegetables To make strong bones and teeth RICKETS IRON Liver, meat, green vegetables For the formation of haemoglobin ANAEMIA IODINE Fish, sea food, sea weed For making hormone thyroxine GOITRE FLUORINE (FLUORIDE) Vegetables, fish, tea, tap water, toothpaste DENTAL (TOOTH) DECAY Chicken Rice Is Amazing! For the formation of strong bones and teeth I Go For Dinner C-R-I-A-I-G-F-D

II. Water • All living things need water to live. • Water carries substances around the body and helps to remove wastes. • It is the medium for chemical reaction in the body.

III. FIBRE (ROUGHAGE) • Fibre is present in all plant food like grains, fruits and vegetable. • gives bulk to the food and helps it to move through the intestine. • helps to prevent CONSTIPATION.

Balanced Diet A diet which contains the right amount of carbohydrates, fats, proteins, vitamins, minerals, water and fibre to maintain good health.

Which of the food shown in the next slide is your healthy diet?