6 Summary

This week, you looked at the energy in food and perhaps successfully extracted the energy from a peanut. You are also now more up to date on the debate about sweeteners and safety.

You should now be able to understand:

• the difference between calories and joules
• how each food group contributes to the energy in your food and drink
• how to work out the energy in food
• the reference values of the different food groups.

Next week, you will look at healthy eating advice in the UK and around the world, global nutrition issues (particularly obesity), and diets spanning from wartime Britain to today’s food banks.

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