Robust education, at all levels of society: public awareness campaigns, public schools, affordable secondary schools.
This can be a problem when you're still struggling with democracy, and a good chunk of your population is barely eating.
Other than that, probably not much.
Despite the recent floods in the wake of Cyclone Debbie, the Northern Rivers region of New South Wales has plentiful food supplies and very little severe hunger (although lots of people there have the munchies at any given time).
And despite the best efforts of the NSW State Government, they do still have democracy (although when even Queenslanders think your state has a corruption problem, you know you are in strife).
Yet the Northern Rivers is riddled with anti-vaccine loons. Despite significant public education campaigns, and free schooling until year 12.