Final answer:
The central idea is that concerns about citizens' health have prompted countries to enact strategies aimed at slowing overconsumption of processed foods.
Step-by-step explanation:
The central idea of the text is that concerns about citizens' health have prompted countries to enact differing strategies aimed at slowing overconsumption of processed foods.
For example, the text mentions that unhealthy and unsustainable foods are heavily marketed, and serving sizes are larger than necessary, contributing to overconsumption and obesity. It also mentions that snack food vending machines are ubiquitous in schools and public buildings.
Overall, the text highlights the need for a widespread attitude shift towards reducing waste, choosing local fruits and vegetables that are in season, and paying attention to how foods are grown and transported.