What is a healthy weight? When we talk about obesity, we are talking about more than just a person’s weight in kilos or pounds. Our weight is not a good representation of how healthy we are. We can weigh a lot because of muscle mass or bone mass, not just fat. It’s also important to consider how tall a person is. Why do you think height makes a difference when we talk about healthy weight? Should a person who is 1,20 weigh the same as someone who is 1,65?
Calculating BMI Doctors use something called the Body Mass Index (BMI) to calculate a person’s healthy weight. For children, age is also an important consideration. ** The BMI is just a guide. It doesn’t account for muscle mass. BMI under 18 means you are under weight. BMI between 18.5 and 25 means you’re a normal weight for your height. BMI between 25.5 and 30 means you’re over normal weight. BMI over 30 means you’re obese for your height.
Where do you fall?
Child Obesity Child obesity is a world wide problem. Look at the graph on the left. Can you find Spain? What percentage of children are obese in Spain according to the data from 2000-02? What about in the USA?
Obesity Statistics for Adults
Muscle vs Fat Here is a picture of equal weights of muscle and fat. Which is bigger? What does that mean about muscle and fat in our bodies? Someone who has 1k of fat might weigh as much as someone with a kilo of muscle, but are they equally healthy? Will they look the same? What does this mean about using weight as our only guide to being healthy?
Healthy Habbits What are some things we can do to be healthy? Exercise and eat right!
What’s are healthy food choices? We’ve all seen the food pyramid, but there’s more to healthy eating than just fruits and vegetables. Everything we eat gives us energy. This energy is measured in Calories. When we do exercise our body takes the energy from our food to help us run fast and play hard. But if we eat more calories than we use during exercise, those calories become fat in our bodies. Look at the chart, how many calories should you eat every day?
Spot the Block! Almost all food packaging, boxes or bags, comes with a label to tell us how many calories are in the food we eat. The labels also break down the information so we know the amount of energy comes from fat. The purple percentages on the right show whether we are getting a high or low amount of a certain nutrient. A low amount is 5% or less and a high amount is 20% or more. In the example, which nutrients are low? Which are high? Is this a healthy meal?
Pop Quiz! What are two important parts of being healthy? What do calories measure? What happens when we eat more calories than we use? What does BMI stand for? Is one kilo of muscle the same size as one kilo of fat? How do doctors measure obesity? Which nutrients should you eat more of? Which should you eat less of? What are some important things to consider when we measure a person’s weight? Name some activities where our bodies use calories to give us energy.