The science of nutrition and healthy eating
The science of nutrition and healthy eating

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The science of nutrition and healthy eating

Week 1: The basics of food


Welcome to the first week of the course!

Over the next eight weeks, you will learn about the components of food and how your digestive system uses them inside your body. You will also look at food labels and how to interpret the information on them. The course ends with a closer look at balanced diets and nutrition globally.

In the following video, Audrey Brown of The Open University finds out how some of the members of staff at the University choose when to have lunch.

Download this video clip.Video player: snhe_1_week_1_vid_1.mp4
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Hello, I’m Audrey Brown, and I’m an associate lecturer at the Open University. Today we’ve come to the university’s Walton Hall campus, to the canteen, to see what the staff here do for lunch. So we’re going to ask them why they’ve chosen to eat at this time today. What reasons are they giving?
I’m eating at this time today because it’s my lunch break, and I normally eat lunch at lunchtime.
This was the time I have spare between meetings.
I normally eat at lunchtime. That’s when I’m hungry.
Why did – we don’t normally eat at this time, do we?
We got hungry.
Because we were hungry and a bit bored.
Hungry and bored.
Yeah. Friday. I think you eat a bit early on a Friday.
Well, for lunch. [LAUGHS] Yeah. It’s lunchtime.
I’m actually particularly hungry at the moment. But you know, every day around this time, I just feel like whether to break up the day, you know, just come to the Hub and grab some food.
Because it’s lunchtime. I’m diabetic, so I need to eat at regular times through the day.
It’s normally the time we feel like eating, just when lots of stomachs start rumbling.
Yeah. I normally see it as more of a break from work, too. So when I feel my energy levels completely depleting, too, that’s when I know I need a break. And it happens at different times throughout the day, actually.
It might vary from between about like 11:30 to about 1 o’clock
I always eat around 1 o’clock so that I can meet my friends. So we all come from different departments and meet up together in one place to eat lunch together.
I’m very, very hungry. I couldn’t wait until later.
So what reasons did people give for eating? Is it because they’re hungry, or just because it’s lunchtime? What other reasons do people have for eating?
End transcript
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After this week’s study, you should be able to understand:

  • why we eat and the factors that affect hunger
  • the different macronutrients and their function in the human body
  • the different micronutrients and their function in the human body.

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