If, as the food industry maintains, the range of low sugar products available to consumers has never been higher, and that the formulation of foods low in fat and salt is growing rapidly to meet the demand for healthier foods, then some encouraging signs in the prevalence of obesity might be clear. But they are not, which opens the door for other measures. The question is, what might follow?
Both the Prime Minister and the Health Minister have signalled they want change, though they have indicated they want to work with industry to achieve their aims. The industry would be wise to accept the invitation, and show a willingness to move swiftly.
Nutritionists say junk food advertising aimed at children should be banned, sugary drinks removed from schools and hospitals and measures taken to reduce salt consumption.
Focusing on children should be priority given the entrenched rate of childhood obesity. One study earlier this year found some pupils were assailed with 27 junk food ads a day at school, on the streets and at home.
The voluntary system which uses stars on food packages to signal their "healthiness" has come in for criticism and is likely to change. Health Minister David Clark and Prime Minister Jacinda Ardern say a sugary drinks tax is on the table.
Nineteen countries, including Britain, now have some taxes on food or beverages. The UK introduced a levy this year, showing it was willing to take tough action to address a costly problem.
Funds raised are directed to health promotion. The industry could of course simply absorb the cost and defeat the purpose of the tax. But if it is serious about signing up to a healthier nation, then it, too, needs to show leadership.