How to tackle Tonga's obesity crisis?
19 January 2016 Last updated at 01:31 GMT
The Pacific island of Tonga is the most obese country in the world but its government is trying to tackle the problem.
Up to 40% of the population is thought to have diabetes and life expectancy is falling.
One of the main causes is a cheap, fatty kind of meat - mutton flaps - imported from New Zealand.
Katy Watson reports.