This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionBMI chart.png
English: Chart showing body mass index (BMI) for a range of heights and weights in both metric and imperial. Colours indicate BMI categories defined by the World Health Organization; underweight, normal weight, overweight, moderately obese, severely obese and very severely obese.
This image is protected by copyright law. However, it may be used for free by anyone, provided that it's used in accordance with the Creative CommonsAttribution-ShareAlike 4.0 International license using the attribution "nagualdesign (CC BY-SA 4.0)". Please read the license carefully before using this image. If you have any questions regarding the license or the reuse of the image please contact me before using it.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.