One workable way would be
One workable way would be similar to WIC. and actually list what items are acceptable but that would take teams of people going through ingredients of everything. That might encourage food makers to upgrade the crap they sell and work their way onto that list

I missed that segment having
I missed that segment having my healthy bran muffin and unhealthy espresso but how does he define "healthy foods?" Fruits and vegetables are overrated and not enough. Protein is very import. And bodies are not created equally so one man's healthy food might be someone else unhealthy food. Some day the public and medical professional may evolve enough to understand this.