The old Food Pyramid wasn't the product of science to begin with.
I don't much care for RFK Jr. politics but it's not hard to figure out most Americans have a lousy diet.
Most Americans have a lousy diet because Americans live in a country dedicated to the relentless pursuit of profit, and it's more profitable to set up fast food joints and strip malls full of chain restaurants, compared to quality grocery stores and fresh markets.
Whole Foods for example. You can get good quality food there. There ain't no Whole Foods in the ghetto. They get Dollar General.
My solution to unhealthy food is a threat to the profit motive, so it would only ever get implemented in an emergency.
Cities could simply set up soup kitchens where anybody can get healthy, nutritious food. It would probably not cost any more than providing public transit. Actually it would probably cost significantly less, since most of the staffing could come from people already involved in similar organizations on a charitable basis.
This is the organizing principle of Rainbow Gathering, which in turn was simply adapted from battlefield tactics observed by a hippie who got drafted and sent to Vietnam. About eighty people can be served by one kitchen until you need more kitchens.
To scale past that you need a dedicated commercial kitchen. In San Diego there's a senior drop-in center that provides free or reduced cost meals to anyone over 55. They serve about 1,000 people daily on-site and I don't know how many more meals go out in the Meals On Wheels vans.
But I think it makes more sense for ktiches to represent a neighborhood, a local community. So set up one every few blocks.
I mean, there's no shortage of vacant lots in the ------ parts of our cities that need this support.
