Really healthy food

• Biologie / Verzorging
• Middelbare school
• havo
• Leerjaar 2

Welcome!

Today: 

Discussing test

Explanation about healthy food (2.4, page 114)

Making exercises

Healthy?

Healthy?

Healthy?

Healthy?

Healthy?

What are we going to learn today?

What a healthy diet is. 

What the consequences of an unhealthy diet are. 

Energy

The definition of a healthy person differs per person. 

This is mostly related to the energy needs of their body. We measure energy in calories or Joules. 1 kcal = 4,7 kJ, you can heat up 1 liter of water by 1 degree Celsius with 1 kcal. 

People that play sports or have a practical profession have a higher energy need than other people, there are also differences between males and females. 

Energy needs humans

BMI (Body mass index)

We calculate a ''healthy weight'' using the body mass index. This is a formula which accounts for the length of a person to see whether a person has a healthy weight.

 

BMI=Weight/length x length

The wheel of 5

The wheel of five is an image made by the Dutch nutrition centre. It shows you what a healthy meal consists of. They also use the daily recommended intake for it. 

The wheel of 5

The wheel of five is an image made by the Dutch nutrition centre. It shows you what a healthy meal consists of. They also use the daily recommended intake for it. 

Eating disorder: too much

Eating too much food can result in health problems, such as heart disease, diabetes and a weakened skeleton. It can also make you feel less energized.  

Eating disorder: Too little

You can also eat less then your body needs. Sometimes because a person is obsessed with it.  

2 common disorders: anorexia nervosa and boulimia nervosa. In each of these disorders the person is really obsessed with how much they eat and/or what they look like. 

Thoughts behind eating disorder

Eating disorder have a mental aspect to it in the background. Someone with a eating disorder not only has to change something physically, but also mentally. This is a very hard process and you always need the help from someone else for it. 

Homework for next lesson

Make the exercises of paragraph 2.4, you don't need to make exercise 4. Good luck!