Treating obesity would go a long way to reduce the numbers of people suffering from type two diabetes, according to experts in the field giving evidence to the Health and Social Care Committee on 21 November 2012.
The committee is conducting an inquiry into the implementation of the National Service Framework for Diabetes in Wales and its future direction.
Encouraging people to live more healthily is a "fine balance between empowering people and creating structures which encourage healthy choices" according to Dr Hugo Van Woerden from Public Health Wales.
He said the rise in average body weight was "the main driver" for type 2 diabetes, but it would take a long term campaign to change people's attitudes to leading a healthy lifestyle.
Cardiff and Vale University Health Board's Director of Public Health Dr Sharon Hopkins also gave evidence to the committee, alongside senior members of Aneurin Bevan Health Board.
She claimed that there would be problems "unless we have an all Wales wide approach bought by our communities.
"It's easy to do the stuff immediately in front of you and easy to ignore stuff that's going to take a while to result in harm," she added.