Use our chart to find out if you are over or under weight using your BMI result As such a BMI calculation is not a suitable measure for some people including children and young people under 18, pregnant women and athletes. Sex and other factors which can impact your weight can also lead to an inaccurate reading.
Just because someone has a ‘normal BMI’ does not mean that they are healthy.īMI doesn’t take account of body composition, for example, muscle, fat, bone density. Within a population there will always be people who are at the extremes (have a high BMI or low BMI).Ī high or low BMI may be an indicator of poor diet, varying activity levels, or high stress. BMI charts are mainly used for working out the health of populations rather than individuals. What is body mass index (BMI)?īMI is used to categorise people’s weight. It’s difficult to know what an individual’s ideal weight should be. The things that have happened to us include: There are many things that affect our weight and health. These include the things that have happened to us and the things that we do.