You can find out if you're overweight by calculating your body mass index (BMI). This shows whether you're a healthy weight for your height.
The size of your waist is also important. If it's too large, your risk of health problems is higher.
How can I lose weight safely?
The best way to lose weight is to make small, realistic changes to your diet and how physically active you are.
The amount of physical activity you should do depends on your age. For example, adults between the ages of 19 and 64 should do 150 minutes a week of moderate-intensity physical activity. Find out more about the physical activity guidelines.