This calculator is based on research data pulled together by a team of researchers at the London School of Hygiene and Tropical Medicine. Using UN data on population size in 177 countries, together with estimates of global weight from the WHO and mean height from national health examination surveys the team were able to calculate average BMI figures for each country.
As with all large data sets, there is a margin of error in this calculation, something statisticians call “standard deviation”. This is indicated on the graph by the faint band either side of your indicated BMI measure.
* Your range is a reference to the “standard deviation from the mean”, in other words your result is likely to vary within these boundaries.
The new BBC calculator can tell you if you are a healthy weight for your height and how you rank against others globally.
Using your age, sex, nationality, height and weight, it will come up with a number representing your Body Mass Index or BMI.
This is a measure doctors use to gauge obesity.
The app plots your BMI and shows how you compare to people from your own and other nations.
Researchers see global weight gain as a bigger threat to mankind than population growth.
As well as the health implications, experts are also concerned about the environmental impact.
The adult human population has a combined weight of 287,000,000 tonnes, researchers say.
Increasing obesity could have the same impact on global resources as an extra billion people, they believe.
Click Here to calculate your BMI…….http://www.bbc.co.uk/news/health-18781786