Medically reviewed by Amelia MacIntyre, DO The body mass index (BMI) tool is used to determine obesity levels in populations.

This calculator computes your body mass index based on your gender, age, height and weight. After you input the information to this calculator, it will provide you with accurate BMI and also tell ...

Use this calculator to determine whether a child is at a healthy weight for his/her height, age and sex. The BMI-percentile-for-age calculator automatically adjusts for differences in height, age and ...

The situation is more complex in children, where the BMI threshold of obesity varies with age and sex. The charts below show how the BMI obesity threshold changes with age for boys and girls.

3 BMI values are age-independent and the same for both sexes ... 6 There are two ways to check your BMI: Use our BMI calculators Use the BMI chart. First, find your height in the left-hand ...

They also found that low BMI was more common in the older age group. This presents a conundrum: low BMI is both lethal and increasingly common with older age. "The answer is that people with high ...

However, new research to be presented at the European Congress on Obesity (ECO 2025) suggests BMI may become less reliable with age. The study, conducted by researchers from Italy and Lebanon ...

People with obesity with similar body mass index (BMI) measurements have differences in muscle and fat based on their age groups. This could mean that BMI isn’t the best tool for older adults ...

D. Anderson Cancer Center that aimed to assess the relationships between BMI over an individual's lifetime and the risk, age of onset, and outcome of pancreatic cancer. 841 patients with ...