No shortage of healthy, yet poor people. Then again we go back to the problem of defining "healthy". Not even the ultra-wealthy are completely illness-free.
Healthy is a BMI in the normal range and following something close to the Harvard nutrition plate (USDA one is bought by big agriculture).
Being able to afford a meal service or go to Whole Foods is also much harder when you live in a food desert. Yes we do give people EBT or something but then it is spent on junk food/soda.
So how do you fix that? Maybe if you’re overweight medically speaking pay more in insurance/taxes? That would never fly tho so we are in the current national predicament.