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Nutrition for Health and Exercise

Diet, health and food handling

  • 3 things to know
  • AS 2

Overview

Saturated fat, salt and sugar and ill health, bone health, nutritional value and empty calories, processed foods, cooking methods, the four Cs, cross-contamination, and use-by and best-before dates.

What you need to know

Answer each one before you reveal it.

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Key term

How is a diet high in saturated fat linked to ill health?

Key term

Explain how too much salt is linked to ill health.

Key term

How is too much sugar linked to ill health?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    How is a diet high in saturated fat linked to ill health?

    Model answer

    Saturated fat raises LDL cholesterol, which builds up in artery walls. The build-up increases the risk of coronary heart disease and stroke.

  2. 2

    Explain how too much salt is linked to ill health.

    Model answer

    Excess salt raises blood pressure, increasing the risk of stroke and heart disease. Adults are advised to eat no more than 6 g of salt a day.

  3. 3

    How is too much sugar linked to ill health?

    Model answer

    Excess sugar adds energy with few nutrients, leading to weight gain and a higher risk of type 2 diabetes. Sugar also causes tooth decay.

  4. 4

    How does diet help protect bone health throughout life?

    Model answer

    Calcium and vitamin D build bone mass during youth and slow its loss in later life. A diet low in these nutrients raises the risk of osteoporosis.

  5. 5

    What is meant by the nutritional value of food?

    Model answer

    Nutritional value is the amount of useful nutrients a food provides compared with its energy. Nutrient-dense foods, such as vegetables and wholegrains, give many nutrients for relatively few calories.

  6. 6

    What are empty calories?

    Model answer

    Empty calories are energy from foods and drinks with few other nutrients, such as sweets, fizzy drinks and alcohol. Empty calories add to weight gain without supporting health.

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AThe target heart rate is about 168 bpm.
BMaximum heart rate is 220 − 18 = 202 bpm.
CThe working is 0.75 × (202 − 65) + 65 = 167.75 bpm.

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