It does seem almost criminal that sugary drinks can be so much cheaper than milk or even bottled water.
Taxes on alcohol and cigarettes go some way to reducing consumption, and to paying something towards the added health system costs.
A sugar tax could do the same thing.
If the science tells us excess sugar consumption leads to obesity and health problems, and studies tell us New Zealanders are consuming too much sugar, then as a society we need to accept that taxation is a legitimate remedy.
It's too easy to bury our heads in the sand and hope things turn out all right.
The right move now could and should lead in years to come to a healthier nation spending less in tax dollars on healthcare.