Eating Healthy

What is the purpose of carbohydrates?

Carbohydrates in the form of starch and glycogen are stores of energy that, when consumed, release energy over a long period of time.

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What is the purpose of fats?

Fats are used to keep warm because they build up insulation, and release fast acting energy to be used by the body.

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What is the purpose of proteins?

Proteins are used for growth, cell repair and cell replacement. They are made up of amino acids that are the building blocks of our existence.

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What is the purpose of fibre?

Fibre is used to make food move though the digestive system smoothly and efficiently.

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What is the purpose of vitamin and minerals?

Vitamins and minerals keep things like skin, bones and blood generally healthy. For example, magnesium ions help maintain a healthy heart so is important for a good diet.

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What does metabolism mean?

Metabolisms are chemical reactions that use energy to keep your body alive. Metabolic rate is the speed at which these reactions occur.

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Why do people have different metabolic rates?

Generally, those with a higher proportion of muscle to fat have a higher metabolic rate because muscle requires more energy than fatty tissue. Also, taller people have faster rates because your body needs more energy to survive.

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What is obesity?

Obesity is being over 20% over the recommended body mass, but is more commonly defined as being overweight due to hormonal problems, lack of exercise or bad diet.

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What problems does obesity cause?

Obesity causes arthritis, type 2 diabetes, high blood pressure and heart disease.

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What is malnutrition?

People whose diet is badly out of balance, either fat or thin, are said to be malnourished.

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What are the problems of eating too little?

Starvation causes slow growth, fatigue, poor resistance to infection and irregular periods in women.

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What are deficiency diseases?

Deficiency diseases are caused by a lack of vitamins and minerals and usually result in problems with the teeth and skin.

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Why is exercise important?

Exercise increases the amount of energy used by the body and decreases the amount of energy stored as fat, so creates a higher muscle-fat ratio and boosts metabolic rate.

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How do you know that an experiment is reliable?

It is reported by an independent scientist, by a qualified person that has no connection with the company or cause, a large sample size to give more corroborating results and the experiment is repeatable.

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Eating Healthy

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