You start getting healthier and losing weight just by eating real food instead of American poison, living in NZ or any other country that cares for its citizens will do that for you
The ease of access and availability of unprocessed foods, or food products without high amounts of corn syrup, sugars and other additives, is much higher in most of the world outside of the US. I can never stay in the US for more than a couple of weeks without gaining weight. Then again, it doesn't help that US food is fantastically tasty, either ♥️
There have been account after account of people leaving the States for one reason or another (Military relocation, job placement, etc), monitor their diet and actually find that while they are technically eating more, they are losing weight.
Fruits and vegetables sprayed and watered with preservatives and pesticides at every step of its cycle that end up in our bodies without much long term study before approving it.
NZ has McDonald’s and other similar trash but like most nations other than the us some restrictions and requirements are in-place and enforced to prevent corporations poisoning us for slightly improved profits