Government Health Care and Food Subsidies

"If the government were paying for our health care, the government would have a very strong interest in changing the way people eat." - Michael Pollan

So if the government was subsidizing your health care, they would probably become more interested in healthy food habits and promoting healthy food production rather than subsidizing the corn and cattle industries.
I know, how about making bad food expensive and healthy food inexpensive, instead of the other way around. It's just an idea.