How do public health policies and government regulations influence the food that we eat as a nation? what does cooper mean when she says the government 'commodifies' food?

The public health policies and government regulations influence the food we eat as a nation since the government would be the one to decide what food to import and export in one's nation and they are the ones who are delivering the news to the local communities and as well as food commodities that also is the meaning when one say the government commodifies food.