Dr Lang said the symposium would look at progress made by individual schools and community groups, but would also address policy change.
Listen: Dr Bodo Lang speaks to Newstalk ZB's Mike Hosking
New Zealanders on average consume about 37 teaspoons of sugar per day - four times the maximum recommended by the American Heart Association.
FIZZ, which comprises researchers and doctors who want New Zealand to be free of sugary drinks by 2025, wants a tax and a nationwide school ban on such drinks.
Meanwhile, Auckland-based Maori public health organisation Hapai Te Hauora has called for national and regional support for community-led programmes.
"Otherwise we are still sending people back into a community environment saturated with sugary drinks, which undermines the good work being done," spokesman Anthony Hawke said.
-AAP