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Why do I need food?

 Q:   Ask a Question about Why do I need food?       
Why do I need food? Your body is built and maintained by substances that you obtain from your food. These substances are broken down and absorbed into the body during the process digestion. They are then rebuilt into useful body-building materials.

Which foods give me energy?

Carbohydrates are substances that the body breaks down to produce energy. Starchy foods such as bread, potatoes and sugars contain carbohydrates. The body also uses some types of fat to provide energy.

Why is protein important?

Protein is an essential body-building substance that you obtain from meat, cheese, eggs, fish and several vegetable sources. Proteins are broken down in the body into amino acids that can be easily absorbed. Later, these amino acids are reassembled into useful proteins. A large part of t he protein you eat is converted into muscle tissue.

Why should I eat fibre?

Fibre is the part of vegetable food that your body cannot digest. It provides the bulk in your diet. Fibre, or roughage, helps food to pass easily through the digestive system. It also helps to keep the system healthy and to prevent some serious diseases.

Why do I need minerals and vitamins?

You only need small amounts of these substances, but they are important in many of the processes that keep the body healthy. If you eat a healthy variety of foods you will be taking in plenty of vitamins and minerals.This is called a balanced diet. If you eat lots of'junk food'this can mean that you are not taking in enough vitamins. You may need to eat more fresh fruit and vegetables.

How much should I eat?

The amount of food you need each day depends on your age, size, sex and the amount of exercise you take. Older people need less food because they have stopped growing. A teenager who plays a lot of vigorous sport will need extra food to provide enough energy. Babies also need lots of energy to help them grow rapidly.


Tags: energy, food, body, health



Category: Education  - ( Education Archive)

Date Added: 21 December '11


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