Losing a small amount of weight, 5 to 10%, and maintaining this weight loss can have a significant positive impact on your overall health. Whatever your weight there may be changes you want to make to improve your health, making a few small sustainable changes to your lifestyle can improve your health. People from these backgrounds may be at higher risk of health problems at a lower BMI than people from other ethnicities.įor a lot of people, achieving a BMI within the ‘healthy range’ is not realistic. The BMI ranges are slightly different for people from South Asian, Chinese, African-Caribbean and black African backgrounds. Results of 25 and over are described as a ‘higher BMI’ and may be just one of the many reasons some of us are at higher risk of some health conditions, including type 2 diabetes. have lost weight because you’ve been ill or not eating very much.Use our chart to find out if you are over or under weight using your BMI result 40 or over – This is described as severe obesity.between 30 and 39.9 – This is described as obesity.between 25 and 29.9 – This is described as overweight.between 18.5 and 24.9 – This is described as the ‘healthy range’.under 18.5 – This is described as underweight.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. Calculate the ideal body weight using Robinsons formula based on gender: For men: 52 kg + 1.9 kg per every inch over 5 feet. BMI charts are mainly used for working out the health of populations rather than individuals. To calculate adjusted body weight AjBW: Use the adjusted body weight formula: AjBW IBW + 0.4 × (ABW - IBW) IBW stands for ideal body weight, and ABW is the actual body weight. Using this example, it would be 1.75 x 1.75 3.06 m2. What is body mass index (BMI)?īMI is used to categorise people’s weight. If a person weighs 75 kilograms and is 1.75 meters tall, you would calculate the BMI as follows: Start by calculating the meters squared. 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.
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